Terminal apparatus, base station apparatus, and communication method

ABSTRACT

An apparatus includes a receiver configured to receive a PDCCH including a DCI format, and a transmitter configured to transmit a PUCCH, wherein in a case that the DCI format schedules a PDSCH and that a last OFDM symbol of the PDSCH is mapped in a first slot, the PUCCH is transmitted in a second slot, and a first offset from the first slot to the second slot is given at least based on a PDSCH-to-HARQ-timing-indicator included in the DCI format, and in a case that the DCI format indicates an SPS release and that a last OFDM symbol of the PDCCH is mapped to a third slot, the PUCCH is transmitted in a fourth slot, and a second offset from the third slot to the fourth slot is given at least based on the PDSCH-to-HARQ-timing-indicator.

TECHNICAL FIELD

An aspect of the present invention relates to a terminal apparatus, abase station apparatus, and a communication method. This applicationclaims priority based on JP 2018-001723 filed on Jan. 10, 2018, thecontents of which are incorporated herein by reference.

BACKGROUND ART

In the 3^(rd) Generation Partnership Project (3GPP), a radio accessmethod and a radio network for cellular mobile communications(hereinafter referred to as “Long Term Evolution (LTE)” or “EvolvedUniversal Terrestrial Radio Access (EUTRA)”) have been studied. In LTE,a base station apparatus is also referred to as an evolved NodeB(eNodeB), and a terminal apparatus is also referred to as user equipment(UE). LTE is a cellular communication system in which multiple areas aredeployed in a cell structure, with each of the multiple areas beingcovered by a base station apparatus. A single base station apparatus maymanage multiple serving cells.

3GPP has been studying a next generation standard (New Radio or NR)(NPL 1) to make a proposal for International Mobile Telecommunication(IMT)-2020, a standard for a next-generation mobile communicationsystem, standardized by the International Telecommunication Union (ITU).NR is required to satisfy requirements for three scenarios includingenhanced Mobile BroadBand (eMBB), massive Machine Type Communication(mMTC), and Ultra Reliable and Low Latency Communication (URLLC) in asingle technology framework.

CITATION LIST Non Patent Literature

-   NPL 1: “New SID proposal: Study on New Radio Access Technology”,    RP-160671, NTT docomo, 3GPP TSG RAN Meeting #71, Goteborg, Sweden, 7    to 10 Mar. 2016.

SUMMARY OF INVENTION Technical Problem

One aspect of the present invention provides a terminal apparatuscapable of efficiently performing communication, a communication methodused for the terminal apparatus, a base station apparatus capable ofefficiently performing communication, and a communication method usedfor the base station apparatus.

Solution to Problem

(1) According to some aspects of the present invention, the followingmeasures are provided. Specifically, a first aspect of the presentinvention is a terminal apparatus including a receiver configured tomonitor a PDCCH including a DCI format, and a transmitter configured totransmit an HARQ-ACK on a PUCCH, wherein a size OACK of an HARQ-ACK codebook of the HARQ-ACK is given at least based on some or all of 1)whether at least one serving cell in M PDCCH monitoring occasionsassociated with the HARQ-ACK code book includes at least one monitoringoccasion for a search space set configured with monitoring of the DCIformat or not, and/or 2) whether a higher layer parameterNumber-MCS-HARQ-DL-DCI is set to a prescribed value for the at least oneserving cell or not.

(2) A second aspect of the present invention is a base station apparatusincluding a transmitter configured to transmit a PDCCH including a DCIformat, and a receiver configured to receive an HARQ-ACK on a PUCCH,wherein a size OACK of an HARQ-ACK code book of the HARQ-ACK is given atleast based on some or all of 1) whether at least one serving cell in MPDCCH monitoring occasions associated with the HARQ-ACK code bookincludes at least one monitoring occasion for a search space setconfigured with monitoring of the DCI format or not, and/or 2) whether ahigher layer parameter Number-MCS-HARQ-DL-DCI is set to a prescribedvalue for the at least one serving cell or not.

(3) A third aspect of the present invention is a communication methodused for a terminal apparatus, the communication method including thesteps of monitoring a PDCCH including a DCI format; and transmitting anHARQ-ACK on a PUCCH, wherein a size OACK of an HARQ-ACK code book of theHARQ-ACK is given at least based on some or all of 1) whether at leastone serving cell in M PDCCH monitoring occasions associated with theHARQ-ACK code book includes at least one monitoring occasion for asearch space set configured with monitoring of the DCI format or not,and/or 2) whether a higher layer parameter Number-MCS-HARQ-DL-DCI is setto a prescribed value for the at least one serving cell or not.

(4) A fourth aspect of the present invention is a communication methodused by a base station apparatus, the method including the steps oftransmitting a PDCCH including a DCI format, and receiving an HARQ-ACKon a PUCCH, wherein a size OACK of an HARQ-ACK code book of the HARQ-ACKis given at least based on some or all of 1) whether at least oneserving cell in M PDCCH monitoring occasions associated with theHARQ-ACK code book includes at least one monitoring occasion for asearch space set configured with monitoring of the DCI format or not,and/or 2) whether a higher layer parameter Number-MCS-HARQ-DL-DCI is setto a prescribed value for the at least one serving cell or not.

(5) A fifth aspect of the present invention is a terminal apparatusincluding: a receiver configured to receive a PDCCH including a DCIformat; and a transmitter configured to transmit a PUCCH, wherein in acase that the DCI format schedules a PDSCH and that a last OFDM symbolof the PDSCH is mapped in a first slot, the PUCCH is transmitted in asecond slot, and a first offset from the first slot to the second slotis given at least based on a PDSCH-to-HARQ-timing-indicator included inthe DCI format, and in a case that the DCI format indicates an SPSrelease and that a last OFDM symbol of the PDCCH is mapped to a thirdslot, the PUCCH is transmitted in a fourth slot, and a second offsetfrom the third slot to the fourth slot is given at least based on thePDSCH-to-HARQ-timing-indicator.

(6) A sixth aspect of the present invention is a base station apparatusincluding: a transmitter configured to transmit a PDCCH including a DCIformat; and a receiver configured to receive a PUCCH, wherein in a casethat the DCI format schedules a PDSCH and that a last OFDM symbol of thePDSCH is mapped in a first slot, the PUCCH is transmitted in a secondslot, and a first offset from the first slot to the second slot is givenat least based on a PDSCH-to-HARQ-timing-indicator included in the DCIformat, and in a case that the DCI format indicates an SPS release andthat a last OFDM symbol of the PDCCH is mapped to a third slot, thePUCCH is transmitted in a fourth slot, and a second offset from thethird slot to the fourth slot is given at least based on thePDSCH-to-HARQ-timing-indicator.

(7) A seventh aspect of the present invention is a communication methodused for a terminal apparatus, the communication method including thesteps of: receiving a PDCCH including a DCI format; and transmitting aPUCCH, wherein in a case that the DCI format schedules a PDSCH and thata last OFDM symbol of the PDSCH is mapped in a first slot, the PUCCH istransmitted in a second slot, and a first offset from the first slot tothe second slot is given at least based on aPDSCH-to-HARQ-timing-indicator included in the DCI format, and in a casethat the DCI format indicates an SPS release and that a last OFDM symbolof the PDCCH is mapped to a third slot, the PUCCH is transmitted in afourth slot, and a second offset from the third slot to the fourth slotis given at least based on the PDSCH-to-HARQ-timing-indicator.

(8) An eighth aspect of the present invention is a communication methodused for a base station apparatus, the communication method includingthe steps of: transmitting a PDCCH including a DCI format; and receivinga PUCCH, wherein in a case that the DCI format schedules a PDSCH andthat a last OFDM symbol of the PDSCH is mapped in a first slot, thePUCCH is transmitted in a second slot, and a first offset from the firstslot to the second slot is given at least based on aPDSCH-to-HARQ-timing-indicator included in the DCI format, and in a casethat the DCI format indicates an SPS release and that a last OFDM symbolof the PDCCH is mapped to a third slot, the PUCCH is transmitted in afourth slot, and a second offset from the third slot to the fourth slotis given at least based on the PDSCH-to-HARQ-timing-indicator.

Advantageous Effects of Invention

According to one aspect of the present invention, the terminal apparatuscan efficiently perform communication. In addition, the base stationapparatus can efficiently perform communication.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a conceptual diagram of a radio communication system accordingto one aspect of the present embodiment.

FIG. 2 is an example illustrating a relationship between N^(slot)_(symb), a subcarrier spacing configuration p, a slot configuration, anda CP configuration according to one aspect of the present embodiment.

FIG. 3 is a schematic diagram illustrating an example of a resource gridin a subframe according to an aspect of the present embodiment.

FIG. 4 is a diagram illustrating an example of search space setmonitoring occasions and PDCCH monitoring occasions according to oneaspect of the present embodiment.

FIG. 5 is a schematic block diagram illustrating a configuration of aterminal apparatus 1 according to one aspect of the present embodiment.

FIG. 6 is a schematic block diagram illustrating a configuration of abase station apparatus 3 according to one aspect of the presentembodiment.

FIG. 7 is a diagram illustrating an example of a procedure fortransmission of an HARQ-ACK code book 1000 according to one aspect ofthe present embodiment.

FIG. 8 is a diagram illustrating an example of configuration of theHARQ-ACK code book 1000 according to one aspect of the presentembodiment.

FIG. 9 is a diagram illustrating an example of a procedure forconfiguration of the HARQ-ACK code book 1000 according to one aspect ofthe present embodiment.

FIG. 10 is a diagram illustrating an example of a procedure forconfiguration of the HARQ-ACK code book 1000 according to the one aspectof the present embodiment.

DESCRIPTION OF EMBODIMENTS

Embodiments of the present invention will be described below.

FIG. 1 is a conceptual diagram of a radio communication system accordingto an aspect of the present embodiment. In FIG. 1, the radiocommunication system includes terminal apparatuses 1A to 1C and a basestation apparatus 3. Hereinafter, the terminal apparatuses 1A to 1C areeach also referred to as a terminal apparatus 1.

A subframe configuration will now be described.

In the radio communication system according to an aspect of the presentembodiment, at least Orthogonal Frequency Division Multiplexing (OFDM)is used. An OFDM symbol is a unit of an OFDM time domain. The OFDMsymbol includes at least one or multiple subcarriers. In generation of abaseband signal, the OFDM symbol is converted into a time-continuoussignal.

A SubCarrier Spacing (SCS) may be given by the subcarrier spacingΔf=2^(μ)*15 kHz. For example, the subcarrier spacing configuration p maybe configured to be any of 0, 1, 2, 3, 4, and/or 5. For a Carrierbandwidth part (CBP), the subcarrier spacing configuration p may begiven by a higher layer parameter.

In the radio communication system according to an aspect of the presentembodiment, a time unit T_(c) is used for representing the length of thetime domain. The time unit T_(c) may be given byT_(c)=1/(Δf_(max)*N_(f)). Δf_(max) may be the maximum value of thesubcarrier spacing supported by the radio communication system accordingto one aspect of the present embodiment. Δf_(max) may be Δf_(max)=480kHz. N_(f) may be N_(f)=4096. A constant κ isκ=Δf_(max)*N_(f)/(Δf_(ref)N_(f, ref))=64. Δf_(ref) may be 15 kHz.N_(f, ref) may be 2048.

The constant κ may be a value indicating a relationship between areference subcarrier spacing and T_(c). The constant κ may be used for alength of a subframe. The number of slots included in the subframe maybe given at least based on the constant κ. Δf_(ref) is the referencesubcarrier spacing, and N_(f, ref) is a value corresponding to thereference subcarrier spacing.

Downlink transmission and/or uplink transmission includes 10-ms frames.A frame includes 10 subframes. A length of the subframe is 1 ms. Thelength of the subframe may be given independently of the subcarrierspacing Δf. In other words, the frame may be configured independently ofp. The length of the subframe may be given independently of thesubcarrier spacing Δf. In other words, the subframe may be configuredindependently of μ.

For a certain subcarrier spacing configuration p, the number and indicesof slots included in a subframe may be given. For example, a first slotnumber n^(μ) _(s) may be given in ascending order ranging from 0 toN^(subframe,μ) _(slot)−1 within a subframe. For the subcarrier spacingconfiguration p, the number and indices of slots included in a frame maybe given. For example, a second slot number n^(μ) _(s, f) may be givenin ascending order ranging from 0 to N^(frame, μ) _(slot)−1 within aframe. N^(slot) _(symb) continuous OFDM symbols may be included in oneslot. The N^(slot) _(symb) may be given at least based on some or all ofa slot configuration and/or a Cyclic Prefix (CP) configuration. The slotconfiguration may be given by a higher layer parameterslot_configuration. The CP configuration may be given at least based ona higher layer parameter. The CP configuration may be given at leastbased on dedicated RRC signaling. The first slot number and the secondslot number are also referred to as slot numbers (slot indexes).

FIG. 2 is an example illustrating a relationship between N^(slot)_(symb), the subcarrier spacing configuration μ, a slot configuration,and a CP configuration according to one aspect of the presentembodiment. In FIG. 2A, in a case that the slot configuration is 0 andthat the subcarrier spacing configuration μ is 2 and that the CPconfiguration is a normal cyclic prefix (normal CP), N^(slot)_(symb)=14, N^(frame, μ) _(slot)=40, and N^(subframe, μ) _(slot)=4. Inaddition, in FIG. 2B, in a case that the slot configuration is 0 andthat the subcarrier spacing configuration μ is 2 and that the CPconfiguration is an extended cyclic prefix (extended CP), N^(slot)_(symb)=12, N^(frame, μ) _(slot)=40, and N^(subframe, μ) _(slot)=4. TheN^(slot) _(symb) in the slot configuration 0 may correspond to twice theN^(slot) _(symb) in the slot configuration 1.

Physical resources will be described below.

An antenna port is defined in such a manner that a channel on which asymbols on one antenna port is conveyed can be inferred from a channelon which another symbol on the same antenna port is conveyed. In a casethat a large scale property of the channel on which the symbol on oneantenna port is conveyed can be inferred from the channel on which thesymbol on another antenna port is conveyed, the two antenna ports aresaid to be Quasi Co-Located (QCL). The large scale property may includeat least a long term performance of a channel. The large scaleproperties may include at least some or all of delay spread, Dopplerspread, Doppler shift, average gain, average delay, and spatial Rxparameters. A first antenna port and a second antenna port being QCLwith respect to a beam parameter may mean that a reception beam assumedby the reception side for the first antenna port may be the same as areception beam assumed by the reception side for the second antennaport. The first antenna port and the second antenna port being QCL withrespect to a beam parameter may mean that a transmission beam assumed bythe reception side for the first antenna port may be the same as atransmission beam assumed by the reception side for the second antennaport. In a case that a large scale property of a channel on which asymbol on one antenna port is conveyed can be inferred from a channel onwhich a symbol on another antenna port is conveyed, the terminalapparatus 1 may assume the two antenna ports to be QCL. Two antennaports being QCL may mean that the two antenna ports are assumed to beQCL.

For each of configuration of the subcarrier spacing and setting ofcarriers, a resource grid including N^(μ) _(RB, x)N^(RB) _(sc)subcarriers and N^((μ)) _(symb)N^(subframe, μ) _(symb) OFDM symbols isgiven. N^(μ) _(RB, x) may indicate the number of resource blocks givenfor the subcarrier spacing configuration μ for a carrier x. N^(μ)_(RB, x) may indicate the maximum number of resource blocks given forthe subcarrier spacing configuration μ for the carrier x. The carrier xindicates either a downlink carrier or an uplink carrier. In otherwords, x is “DL” or “UL”. N^(μ) _(RB) is a designation includingNμ_(RB, DL) and/or N^(μ) _(RB, UL). N^(RB) _(sc) may indicate the numberof subcarriers included in one resource block. At least one resourcegrid may be given for each antenna port p and/or for each subcarrierspacing configuration μ and/or for each Transmission directionconfiguration. The transmission direction includes at least Downlink(DL) and Uplink (UL). Hereinafter, a set of parameters including atleast some or all of the antenna port p, the subcarrier spacingconfiguration μ, and the transmission direction configuration is alsoreferred to as a first radio parameter set. That is, one resource gridmay be given for each first radio parameter set.

A carrier included in a serving cell in downlink is referred to as adownlink carrier (or a downlink component carrier). A carrier includedin a serving cell in uplink is referred to as an uplink carrier (uplinkcomponent carrier). A downlink component carrier and an uplink componentcarrier are collectively referred to as a component carrier.

Each element in the resource grid given for each first radio parameterset is referred to as a resource element. The resource element isidentified by an index k_(sc) of the frequency domain and an index 1 ofthe time domain. The resource element is identified by the index k_(sc)of the frequency domain and the index 1 of the time domain for a firstradio parameter set. The resource element identified by the index k_(sc)of the frequency domain and the index 1 of the time domain is alsoreferred to as a resource element (k, 1). The index k_(sc) of thefrequency domain indicates any value from 0 to N^(μ) _(RB)N^(RB)_(sc)−1. N^(μ) _(RB) may be the number of resource blocks given for thesubcarrier spacing configuration μ. N^(RB) _(sc) is the number ofsubcarriers included in a resource block, and N^(RB) _(sc)=12. The indexk_(sc) of the frequency domain may correspond to a subcarrier indexk_(sc). The index 1 of the time domain may correspond to an OFDM symbolindex 1.

FIG. 3 is a schematic diagram illustrating an example of a resource gridin a subframe according to an aspect of the present embodiment. In theresource grid of FIG. 3, the horizontal axis is the index 1 of the timedomain, and the vertical axis is the index k_(sc) of the frequencydomain. In one subframe, the frequency domain of the resource gridincludes N^(μ) _(RB)N^(RB) _(sc) subcarriers. In one subframe, the timedomain of the resource grid may include 14*2μ OFDM symbols. A resourceblock includes N^(RB) _(sc) subcarriers. The time domain of the resourceblock may correspond to one OFDM symbol. The time domain of the resourceblock may correspond to 14 OFDM symbols. The time domain of the resourceblock may correspond to one or multiple slots. The time domain of theresource block may correspond to one subframe.

The terminal apparatus 1 may receive indication to perform transmissionand/or reception by using only a subset of the resource grid. The subsetof the resource grid is also referred to as a carrier bandwidth part,and the carrier bandwidth part may be given at least based on some orall of a higher layer parameter and/or DCI. The carrier bandwidth partis also referred to as a bandwidth part (BP). In other words, theterminal apparatus 1 need not receive indication to perform transmissionand/or reception by using all sets of resource grids. In other words,the terminal apparatus 1 may receive indication to perform transmissionand/or reception by using some of the frequency resources within theresource grid. One carrier bandwidth part may include multiple resourceblocks in the frequency domain. One carrier bandwidth part may includemultiple consecutive resource blocks in the frequency domain. A carrierbandwidth part is also referred to as a BandWidth Part (BWP). A carrierbandwidth part configured for a downlink carrier is also referred to asa downlink carrier bandwidth part. A carrier bandwidth part configuredfor an uplink carrier is also referred to as an uplink carrier bandwidthpart.

A set of downlink carrier bandwidth parts may be configured for eachserving cell. The set of downlink carrier bandwidth parts may includeone or multiple downlink carrier bandwidth parts. A set of uplinkcarrier bandwidth parts may be configured for each serving cell. The setof uplink carrier bandwidth parts may include one or multiple uplinkcarrier bandwidth parts.

A higher layer parameter is a parameter included in higher layersignaling. The higher layer signaling may be a Radio Resource Control(RRC) signaling or a Medium Access Control Control Element (MAC CE).Here, the higher layer signaling may be RRC layer signaling or MAC layersignaling.

The higher layer signaling may be common RRC signaling. The common RRCsignaling may include at least some or all of the following features C1to C3.

Feature C1) mapped to a BCCH logical channel or to a CCCH real channel

Feature C2) including at least a radioResourceConfigCommon informationelement

Feature C3) mapped to a PBCH

The radioResourceConfigCommon information element may includeinformation indicating a configuration commonly used in a serving cell.The configuration commonly used in the serving cell may include at leasta PRACH configuration. The PRACH configuration may indicate at least oneor multiple random access preamble indices. The PRACH configuration mayindicate at least a time/frequency resource of a PRACH.

The higher layer signaling may be dedicated RRC signaling. The dedicatedRRC signaling may include at least some or all of the following featuresD1) and D2.

Feature D1) mapped to a DCCH logical channel

Feature D2) including at least a radioResourceConfigDedicatedinformation element

The radioResourceConfigDedicated information element may include atleast information indicating a configuration specific to the terminalapparatus 1. The radioResourceConfigDedicated information element mayinclude at least information indicating a configuration of the carrierbandwidth part. The configuration of the carrier bandwidth part mayindicate at least a frequency resource of the carrier bandwidth part.

For example, MIB, first system information, and second systeminformation may be included in the common RRC signaling. In addition, ahigher layer message that is mapped to a DCCH logical channel andincludes at least radioResourceConfigCommon may be included in thecommon RRC signaling. In addition, a higher layer message that is mappedto the DCCH logical channel and does not include theradioResourceConfigCommon information element may be included in thededicated RRC signaling. In addition, a higher layer message that ismapped to the DCCH logical channel and includes at least theradioResourceConfigDedicated information element may be included in thededicated RRC signaling.

The first system information may include at least a time index of aSynchronization Signal (SS) block. The SS block is also referred to asan SS/PBCH block. The first system information may include at leastinformation of a PRACH resource. The first system information mayinclude at least information on a configuration of initial connection.The second system information may be system information other than thefirst system information.

The radioResourceConfigDedicated information element may include atleast information of the PRACH resource. TheradioResourceConfigDedicated information element may include at leastinformation on the configuration of initial connection.

A physical channel and a physical signal according to various aspects ofthe present embodiment will be described below.

An uplink physical channel may correspond to a set of resource elementsthat conveys information generated in a higher layer. The uplinkphysical channel is a physical channel used in an uplink carrier. In theradio communication system according to an aspect of the presentembodiment, at least some or all of the uplink physical channelsdescribed below are used.

-   -   Physical Uplink Control CHannel (PUCCH)    -   Physical Uplink Shared CHannel (PUSCH)    -   Physical Random Access CHannel (PRACH)

The PUCCH may be used to transmit uplink control information (UCI). Theuplink control information includes some or all of Channel StateInformation (CSI), a Scheduling Request (SR), and a Hybrid AutomaticRepeat request ACKnowledgement (HARQ-ACK) corresponding to a Transportblock (TB), a Medium Access Control Protocol Data Unit (MAC PDU), aDownLink-Shared Channel (DL-SCH), or a Physical Downlink Shared Channel(PDSCH).

The HARQ-ACK may include at least an HARQ-ACK bit corresponding to atleast one transport block. The HARQ-ACK bit may indicate anacknowledgement (ACK) or a negative-acknowledgement (NACK) correspondingto one or multiple transport blocks. The HARQ-ACK may include at leastan HARQ-ACK code book including one or multiple HARQ-ACK bits. TheHARQ-ACK bit corresponding to one or multiple transport blocks may meanthe HARQ-ACK bit corresponding to a PDSCH including the one or multipletransport blocks.

The HARQ-ACK bit may indicate an ACK or a NACK corresponding to each ofone Code Block Group (CBG) included in the transport block. The HARQ-ACKis also referred to as HARQ feedback, HARQ information, or HARQ controlinformation.

In a case that the PDSCH is scheduled in accordance with the DCI formatincluding the PDSCH-to-HARQ-timing-indicator field, and a slot #n−k_(n)includes a last OFDM symbol to which the PDSCH is mapped, a PUCCHincluding the HARQ-ACK bit corresponding to each of one or multipletransport blocks included in the PDSCH may be transmitted in a slot #n.k_(n) may be given at least based on the PDSCH-to-HARQ-timing-indicatorfield. The k_(n) is also referred to as a first PDSCH processing time.The first PDSCH processing time may correspond to the DCI format. Thefirst PDSCH processing time corresponding to the DCI format may mean thefirst PDSCH processing time being given at least based on thePDSCH-to-HARQ-timing-indicator field included in the DCI format.

In a case that the PDSCH is scheduled in accordance with the DCI formatnot including the PDSCH-to-HARQ-timing-indicator field and that the slot#n−k_(a) includes the last OFDM symbol to which the PDSCH is mapped, thePUCCH including the HARQ-ACK bit corresponding to each of one ormultiple transport blocks included in the PDSCH may be transmitted inthe slot n. The k_(a) may be given independently of thePDSCH-to-HARQ-timing-indicator field. The k_(a) is also referred to as asecond PDSCH processing time. The second PDSCH processing time maycorrespond to the DCI format.

The first PDSCH processing time and the second PDSCH processing time arealso referred to as PDSCH processing time.

A set of the first PDSCH processing times corresponding to the DCIformat may include the first PDSCH processing times corresponding to thevalues indicated by the PDSCH-to-HARQ-timing-indicator field included inthe DCI format.

In a case that the DCI format including thePDSCH-to-HARQ-timing-indicator field indicates the SPS release and thatthe last OFDM symbol to which the PDCCH is mapped is included in theslot #n−k_(n), the PUCCH including the HARQ-ACK bit corresponding to theSPS release may be transmitted in the slot #n. The k_(n) may be given atleast based on the PDSCH-to-HARQ-timing-indicator field. The first PDSCHprocessing time may correspond to the DCI format.

The SPS release may be used at least to release a Configured grant in ahigher layer. The DCI format indicating the SPS release need not be usedfor scheduling of the PDSCH. The SPS release may be indicated by aprescribed field included in the DCI format being set to a prescribedvalue. The prescribed field may include at least aPDSCH-to-HARQ-timing-indicator field. The prescribed field may includeat least a Time-domain PDSCH resource field. The prescribed field mayinclude at least an NDI indication information field. The prescribedfield may include at least an RV information field.

The scheduling request may be at least used to request PUSCH resourcesfor initial transmission.

The channel state information may include at least some or all of aChannel Quality Indicator (CQI), a Precoder Matrix Indicator (PMI), anda Rank Indicator (RI). The CQI is an indicator associated with channelquality (e.g., a propagation strength), and the PMI is an indicatorindicating a precoder. The RI is an indicator indicating a transmissionrank (or the number of transmission layers).

The PUSCH is used at least to transmit transport blocks (TB, MAC PDU,UL-SCH, and PUSCH). The PUSCH may be used to transmit at least some orall of the transport blocks, HARQ-ACK, channel state information, andscheduling request. The PUSCH is used to at least transmit random accessmessage 3.

The PRACH is used at least to transmit a random access preamble (randomaccess message 1). The PRACH may be used at least to indicate some orall of an initial connection establishment procedure, a handoverprocedure, a connection re-establishment procedure, synchronization withPUSCH transmission (timing adjustment), and a resource request for thePUSCH. The random access preamble may be used to notify the base stationapparatus 3 of an index (random access preamble index) given by a higherlayer of the terminal apparatus 1.

The random access preamble may be given by cyclic-shifting a Zadoff-Chusequence corresponding to a physical root sequence index u. TheZadoff-Chu sequence may be generated based on the physical root sequenceindex u. In one serving cell, multiple random access preambles may bedefined. A random access preamble may be identified at least based on anindex of the random access preamble. A different random access preamblecorresponding to a different index of the random access preamble maycorrespond to a different combination of the physical root sequenceindex u and the cyclic shift. The physical root sequence index u and thecyclic shift may be given at least based on information included insystem information. The physical root sequence index u may be an indexfor identifying a sequence included in the random access preamble. Therandom access preamble may be identified at least based on the physicalroot sequence index u.

In FIG. 1, the following uplink physical signals are used for uplinkradio communication. The uplink physical signals may not be used totransmit information output from a higher layer, but is used by aphysical layer.

-   -   UpLink Demodulation Reference Signal (UL DMRS)    -   Sounding Reference Signal (SRS)    -   UpLink Phase Tracking Reference Signal (UL PTRS)

The UL DMRS is associated with transmission of a PUSCH and/or a PUCCH.The UL DMRS is multiplexed with the PUSCH or the PUCCH. The base stationapparatus 3 may use the UL DMRS in order to perform channel compensationof the PUSCH or the PUCCH. Transmission of both a PUSCH and a UL DMRSassociated with the PUSCH will be hereinafter referred to simply astransmission of a PUSCH. Transmission of both a PUCCH and a UL DMRSassociated with the PUCCH will be hereinafter referred to simply astransmission of a PUCCH. The UL DMRS associated with the PUSCH is alsoreferred to as a UL DMRS for a PUSCH. The UL DMRS associated with thePUCCH is also referred to as a UL DMRS for a PUCCH.

The SRS may not be associated with transmission of the PUSCH or thePUCCH. The base station apparatus 3 may use the SRS for measuring achannel state. The SRS may be transmitted at the end of a subframe in anuplink slot or in a predetermined number of OFDM symbols from the end.

The UL PTRS may be a reference signal that is at least used for phasetracking. The UL PTRS may be associated with a UL DMRS group includingat least an antenna port used for one or multiple UL DMRSs. Theassociation of the UL PTRS with UL DMRS group may mean that the antennaport for the UL PTRS and some or all of the antenna ports included inthe UL DMRS group are at least QCL. The UL DMRS group may be identifiedat least based on the antenna port of the lowest index for the UL DMRSincluded in the UL DMRS group. The UL PTRS may be mapped to an antennaport having the lowest index and included in one or multiple antennaports to which one codeword is mapped. In a case that one codeword is atleast mapped to the first layer and the second layer, the UL PTRS may bemapped to the first layer. The UL PTRS need not be mapped to the secondlayer. The index of the antenna port to which the UL PTRS is mapped maybe given at least based on the downlink control information.

In FIG. 1, the following downlink physical channels are used fordownlink radio communication from the base station apparatus 3 to theterminal apparatus 1. The downlink physical channels are used by thephysical layer for transmission of information output from a higherlayer.

-   -   Physical Broadcast Channel (PBCH)    -   Physical Downlink Control Channel (PDCCH)    -   Physical Downlink Shared Channel (PDSCH)

The PBCH is used at least to transmit a Master Information Block (MIB,BCH, or Broadcast Channel). The PBCH may be transmitted at a prescribedtransmission interval. The PBCH may be transmitted at intervals of 80ms. The PBCH may be transmitted at intervals of 160 ms. Contents ofinformation included in the PBCH may be updated at intervals of 80 ms.Some or all of the information included in the PBCH may be updated atintervals of 160 ms. The PBCH may include 288 subcarriers. The PBCH mayinclude 2, 3, or 4 OFDM symbols. The MIB may include information on anidentifier (index) of a synchronization signal. The MIB may includeinformation indicating at least some of numbers of slots, subframes,and/or radio frames in which the PBCH is transmitted.

The PDCCH is used at least to transmit Downlink Control Information(DCI). The PDCCH may be transmitted with at least the downlink controlinformation. The downlink control information is also called a DCIformat. The downlink control information may include at least either adownlink grant or an uplink grant. The DCI format used for scheduling ofthe PDSCH may also be referred to as a downlink grant. The DCI formatused for scheduling of the PUSCH may also be referred to as an uplinkgrant. The downlink grant is also referred to as downlink assignment ordownlink allocation.

The DCI format may include at least some or all of a Transport BlockSize (TBS) information field mapped to information bits at leastindicating the TBS of a transport block included in a PDSCH scheduled inaccordance with the DCI format, a Resource allocation field mapped toinformation bits at least indicating a set of resource blocks to whichthe PDSCH is mapped in the frequency domain, an MCS information fieldmapped to information bits at least indicating a modulation scheme forthe PDSCH, an HARQ process number information field mapped toinformation bits at least indicating an HARQ process numbercorresponding to the transport block, a New Data Indicator (NDI)indication information field mapped to information bits at leastindicating an NDI corresponding to the transport block; and a RedundancyVersion (RV) information field mapped to information bits at leastindicating an RV for the transport block.

The one or multiple information fields included in the DCI format may bemapped to information bits given through joint coding of multiple piecesof indication information. For example, the DCI format may include theMCS information field mapped to information bits given at least based onjoint coding of information of the TBS and information indicating amodulation scheme for the PDSCH.

In various aspects of the present embodiment, unless otherwisespecified, the number of resource blocks indicates the number ofresource blocks in the frequency domain.

A single downlink grant is at least used for scheduling of a singlePDSCH in a single serving cell.

A single uplink grant is at least used for scheduling of a single PUSCHin a single serving cell.

A single physical channel may be mapped to a single serving cell. Asingle physical channel may be mapped to a single carrier bandwidth partconfigured for a single carrier included in a single serving cell.

For the terminal apparatus 1, one or multiple COntrol REsource SETs(CORESETs) are configured. The terminal apparatus 1 monitors the PDCCHin one or multiple control resource sets.

The control resource set may indicate a time-frequency domain to whichone or multiple PDCCHs can be mapped. The control resource set may be aregion in which the terminal apparatus 1 monitors the PDCCH. The controlresource set may include continuous resources (Localized resources). Thecontrol resource set may include non-continuous resources (distributedresources).

In the frequency domain, the unit of mapping the control resource setmay use a resource block. In the frequency domain, for example, the unitof mapping the control resource set may be six resource blocks. In thetime domain, the unit of mapping the control resource set may use anOFDM symbol. In the time domain, for example, the unit of mapping thecontrol resource set may be one OFDM symbol.

The frequency domain of the control resource sets may be given at leastbased on higher layer signaling and/or downlink control information.

The time domain of the control resource sets may be given at least basedon higher layer signaling and/or downlink control information.

A certain control resource set may be a Common control resource set. Thecommon control resource set may be a control resource set configuredcommonly to multiple terminal apparatuses 1. The common control resourceset may be given at least based on some or all of an MIB, first systeminformation, second system information, common RRC signaling, and a cellID. For example, the time resource and/or the frequency resource of thecontrol resource set configured to monitor the PDCCH to be used forscheduling of the first system information may be given at least basedon the MIB.

A certain control resource set may be a Dedicated control resource set.The dedicated control resource set may be a control resource setconfigured to be used exclusively for the terminal apparatus 1. Thededicated control resource set may be given at least based on dedicatedRRC signaling and some or all of values of C-RNTI.

A set of candidates for the PDCCH monitored by the terminal apparatus 1may be defined from the perspective of the search space. In other words,the set of PDCCH candidates monitored by the terminal apparatus 1 may beprovided by the search space.

The search space may include one or multiple PDCCH candidates at one ormultiple Aggregation levels. The aggregation level of the PDCCHcandidate may indicate the number of CCEs constituting the PDCCH.

The terminal apparatus 1 may monitor at least one or multiple searchspace in a slot in which Discontinulous reception (DRX) is notconfigured. The DRX may be given at least based on a higher layerparameter. The terminal apparatus 1 may monitor at least one or multipleSearch space sets in a slot in which the DRX is not configured.

The search space set may include at least one or multiple search spaces.The search space set may include at least some or all of Type 0 PDCCHcommon search spaces, Type 1 PDCCH common search spaces, and/or theUE-specific search spaces.

Each of the search space sets may be associated with a single controlresource set. Each of the search space sets may be included in a singlecontrol resource set. Each search space set may be given an index of thecontrol resource set associated with the search space set.

For each search space set, at least the DCI format included in themonitored PDCCH may be configured. For a certain Type 0 common searchspace, at least monitoring of the PDCCH including the first DCI formatmay be configured. For a certain Type 1 PDCCH common search space, atleast monitoring of the PDCCH including the first DCI format may beconfigured. For a certain UE-specific search space, at least monitoringof the first DCI format and/or the second DCI format may be configured.The first DCI format and the second DCI format are also referred to as aDCI format.

The first DCI format need not include at least a field indicating anindex of a carrier bandwidth part in which the PDSCH scheduled with thefirst DCI format is transmitted. The second DCI format may include atleast a field indicating an index of a carrier bandwidth part to whichthe PDSCH scheduled by the second DCI format is transmitted.

The first DCI format may be a DCI format not including two transportblocks in the PDSCH scheduled with the first DCI format, independentlyof the value of a higher layer parameter Number-MCS-HARQ-DL-DCI. Thefirst DCI format may include an MCS field corresponding to the firsttransport block independently of the value of the higher layer parameterNumber-MCS-HARQ-DL-DCI. The first DCI format need not include an MCSfield corresponding to the second transport block independently of thevalue of the higher layer parameter Number-MCS-HARQ-DL-DCI.

The second DCI format may be a DCI format in which whether two transportblocks are included in the PDSCH scheduled with the second DCI format ornot is given at least based on the value of the higher layer parameterNumber-MCS-HARQ-DL-DCI. At least based on the value of the higher layerparameter Number-MCS-HARQ-DL-DCI, the first DCI format may include anMCS field corresponding to the first transport block and an MCS fieldcorresponding to the second transport block.

For each of the search space sets, Monitoring periodicity of the searchspace set may be configured. The monitoring periodicity of the searchspace set may indicate at least the interval between the slots in whichthe search space set is monitored by the terminal apparatus 1. A higherlayer parameter indicating at least the monitoring periodicity of thesearch space set may be provided for each search space set.

For each of the search space sets, a Monitoring offset of the searchspace set may be configured. The monitoring offset of the search spaceset may indicate at least an offset from a reference index (e.g., slot#0) of the index of the slot in which the search space set is monitoredby the terminal apparatus 1. A higher layer parameter indicating atleast the monitoring offset of the search space set may be provided foreach search space set.

For each of the search space sets, a Monitoring pattern of the searchspace set may be configured. The monitoring pattern of the search spaceset may indicate the first OFDM symbol for the search space set in whichthe monitoring is performed. The monitoring pattern of the search spaceset may be provided by a bitmap indicating the first OFDM symbol in oneor multiple slots. A higher layer parameter indicating at least themonitoring pattern of the search space set may be provided for eachsearch space set.

A Monitoring occasion for the search space set may be given at leastbased on some or all of the monitoring periodicity of the search spaceset, the monitoring offset of the search space set, the monitoringpattern of the search space set, and/or the DRX configuration.

FIG. 4 is a diagram illustrating an example of monitoring occasions forthe search space set and PDCCH monitoring occasions according to oneaspect of the present embodiment. In FIG. 4, search space sets 91 andsearch space sets 92 are configured in a primary cell 301, search spacesets 93 are configured in a secondary cell 302, and a search space set94 is configured in a secondary cell 303.

In FIG. 4, blocks indicated by a grid line indicate the search spacesets 91, blocks indicated by an upward-sloping line indicate the searchspace sets 92, blocks indicated by a downward-sloping line indicate thesearch space sets 93, and blocks indicated by a horizontal line indicatethe search space sets 94.

The monitoring periodicity of the search space set 91 is set to oneslot, the monitoring offset of the search space set 91 is set to zeroslots, and the monitoring pattern of the search space set 91 is set to[1,0,0,0,0,0,0,1,0,0,0,0,0,0]. In other words, the monitoring occasionfor the search space set 91 corresponds to the first OFDM symbol (OFDMsymbol #0) and the eighth OFDM symbol (OFDM symbol #7) in each of theslots.

The monitoring periodicity of the search space set 92 is set to twoslots, the monitoring offset of the search space set 92 is set to zeroslots, and the monitoring pattern of the search space set 92 is set to[1,0,0,0,0,0,0,0,0,0,0,0,0,0]. In other words, the monitoring occasionfor the search space set 92 corresponds to the first OFDM symbol (OFDMsymbol #0) in each even-numbered slot.

The monitoring periodicity of the search space set 93 is set to twoslots, the monitoring offset of the search space set 93 is set to zeroslots, and the monitoring pattern of the search space set 93 is set to[0,0,0,0,0,0,0,1,0,0,0,0,0,0]. In other words, the monitoring occasionfor the search space set 93 is the eighth OFDM symbol (OFDM symbol #7)in each even-numbered slot.

The monitoring periodicity of the search space set 94 is set to twoslots, the monitoring offset of the search space set 94 is set to oneslot, and the monitoring pattern of the search space set 94 is set to[1,0,0,0,0,0,0,0,0,0,0,0,0,0]. In other words, the monitoring occasionfor the search space set 94 is the first OFDM symbol (OFDM symbol #0) ineach odd-numbered slot.

From slot #0 to slot #3 in FIG. 4, the number of occasions (PDCCHmonitoring occasions) on which the PDCCH is monitored is eight. Thenumber of PDCCH monitoring occasions may be given by the sum and/orunion of the monitoring occasions for the search space set configured inthe serving cell configured for the terminal apparatus 1.

For example, in a case that the search space sets 91 and the searchspace sets 92 are configured in the primary cell 301, the PDCCHmonitoring occasions from slot #0 to slot #3 in FIG. 4 include the OFDMsymbol #0 in the slot #0, the OFDM symbol #7 in the slot #0, the OFDMsymbol #0 in the slot #1, the OFDM symbol #7 in the slot #1, the OFDMsymbol #0 in the slot #2, the OFDM symbol #7 in the slot #2, the OFDMsymbol #0 in the slot #3, and OFDM symbol #7 in the slot #3. In otherwords, in a case that the search space sets 91 and the search space sets92 are configured in the primary cell 301, the number of PDCCHmonitoring occasions from slot #0 to slot #3 in FIG. 4 is eight.

For example, in a case that the search space sets 92 are configured inthe primary cell 301 and the search space sets 93 are configured in thesecondary cell 302, the PDCCH monitoring occasions from slot #0 to slot#3 in FIG. 4 include the OFDM symbol #0 in the slot #0, the OFDM symbol#7 in the slot #0, the OFDM symbol #0 in the slot #2, and the OFDMsymbol #7 in the slot #2. In other words, in a case that the searchspace set 92 is configured in the primary cell 301 and the search spaceset 93 is configured in the secondary cell 302, the number of PDCCHmonitoring occasions from slot #0 to slot #3 in FIG. 4 is four.

Type 0 PDCCH common search space may be used at least for the DCI formatwith a CRC sequence scrambled with a System Information-Radio NetworkTemporary Identifier (SI-RNTI). The configuration of the controlresource set at least associated with Type 0 PDCCH common search spacemay be given at least based on a higher layer parameterRMSI-PDCCH-Config. The higher layer parameter RMSI-PDCCH-Config may beincluded in the MIB. The higher layer parameter RMSI-PDCCH-Config mayindicate at least one or both of the number of resource blocks includedin the control resource set at least associated with Type 0 PDCCH commonsearch space, and the number of OFDM symbols included in the controlresource set. The higher layer parameter RMSI-PDCCH-Config may beindicated by an information field included in the MIB.

Type 1 PDCCH common search space may be used at least for the DCI formatwith a CRC sequence scrambled with a Random Access-Radio NetworkTemporary Identifier (RA-RNTI), a CRC sequence scrambled with aTemporary Common-Radio Network Temporary Identifier (TC-RNTI), and/or aCRC sequence scrambled with a Common-Radio Network Temporary Identifier(C-RNTI). The RA-RNTI may be given at least based on a time/frequencyresource of the random access preamble transmitted by the terminalapparatus 1. The TC-RNTI may be provided by a PDSCH (also referred to asmessage 2 or a random access response grant) scheduled in accordancewith the DCI format with the CRC sequence scrambled with the RA-RNTI.The C-RNTI may be given at least based on the PDSCH (also referred to asmessage 4 or a contention resolution) scheduled in accordance with theDCI format with the CRC sequence scrambled with the TC-RNTI.

The UE-specific search space may be used at least for the DCI formatwith the CRC sequence scrambled with the C-RNTI.

The common control resource set may include at least one or both of theCSS and the USS. The dedicated control resource set may include at leastone or both of the CSS and the USS.

A physical resource of the search space includes a Control ChannelElement (CCE) of the control channel. The CCE includes a predeterminednumber of Resource Element Groups (REGs). For example, the CCE mayinclude six REGs. The REG may include one OFDM symbol in one PhysicalResource Block (PRB). In other words, the REG may include 12 ResourceElements (REs). The PRB is also simply referred to as a Resource Block(RB).

The PDSCH is used at least to transmit the transport block. The PDSCHmay be used at least to transmit random access message 2 (random accessresponse). The PDSCH may be used at least to transmit system informationincluding parameters used for initial access.

In a case that the PDSCH is scheduled in accordance with the DCI formatincluding the Time-domain PDSCH resource field and the PDCCH includingthe DCI format is transmitted in the slot #n−j_(n), the PDSCH may betransmitted in the slot #n. The j_(n) may be given at least based on theTime-domain PDSCH resource field. The j_(n) is also referred to as afirst PDCCH processing time. The first PDCCH processing time maycorrespond to the DCI format. The first PDCCH processing timecorresponding to the DCI format may mean the first PDCCH processing timebeing given at least based on the Time-domain PDSCH resource fieldincluded in the DCI format.

The set of the first PDCCH processing times corresponding to the DCIformat may include at least the first PDCCH processing timescorresponding to the values indicated by the Time-domain PDSCH resourcefield included in the DCI format.

In a case that the PDSCH is scheduled in accordance with the DCI formatnot including the Time-domain PDSCH resource field and the PDCCHincluding the DCI format is transmitted in the slot #n−j_(a), the PDSCHmay be transmitted in the slot #n. The j_(a) may be given independentlyof the Time-domain PDSCH resource field. The j_(a) is also referred toas a second PDCCH processing time. The second PDCCH processing time maycorrespond to the DCI format.

The first PDCCH processing time and the second PDCCH processing time arealso referred to as the PDCCH processing time.

The PDSCH corresponding to the PDCCH may mean the PDSCH being scheduledin accordance with the DCI format included in the PDCCH.

In a case that the DCI format including the Time-domain PDSCH resourcefield indicates the SPS release and that the PDCCH including the DCIformat is transmitted in a slot #n−j_(n), the first PDCCH-PUCCHprocessing time may be given at least based on some or all of the PDSCHscheduled in accordance with the DCI format being assumed to betransmitted in the slot #n and/or the PDSCH-to-HARQ-timing-indicatorfield included in the DCI format. The J. may be given at least based onthe Time-domain PDSCH resource field. The first PDCCH processing timemay correspond to the DCI format. Details of a first PDCCH-PUCCHprocessing time will be described below.

In a case that the DCI format including the Time-domain PDSCH resourcefield indicates the SPS release and that the PDCCH including the DCIformat is transmitted in a slot #n−j_(x), the first PDCCH-PUCCHprocessing time may be given at least based on some or all of the PDSCHscheduled in accordance with the DCI format being assumed to betransmitted in the slot #n and/or the PDSCH-to-HARQ-timing-indicatorfield included in the DCI format. The j_(x) is also referred to as anSPS release processing time. The j_(x) may be given independently of theTime-domain PDSCH resource field. The j_(x) may be given at least basedon a higher layer parameter. The j_(x) may be set to 0. The j_(x) may beset to a prescribed value.

The set of the first PDCCH processing times corresponding to the DCIformat may include at least the first PDCCH processing timescorresponding to the values indicated by the Time-domain PDSCH resourcefield included in the DCI format.

In a case that the DCI format not including the Time-domain PDSCHresource field indicates the SPS release and the PDCCH including the DCIformat is transmitted in slot #n−j_(a), the second PDCCH-PUCCHprocessing time may be given at least based on some or all of the PDSCHbeing assumed to be transmitted in the slot #n and/or thePDSCH-to-HARQ-timing-indicator field included in the DCI format. Thej_(a) may be given independently of the Time-domain PDSCH resourcefield. The j_(a) may be set to a prescribed value. The j_(a) may be setto 0. The second PDCCH processing time may correspond to the DCI format.

The SPS release being indicated in accordance with the DCI format maymean the SPS release being indicated by the PDCCH including the DCIformat. The SPS release being indicated may mean the SPS release beingactivated.

The PDCCH-PUCCH processing time indicating a time (or slot) from a slotin which the PDCCH is transmitted to a slot in which the PUCCH includingthe HARQ-ACK corresponding to the PDCCH is transmitted may be given atleast based on some or all of the first PDCCH processing time, thesecond PDCCH processing time, the first PDSCH processing time, and/orthe second PDSCH processing time. The PDCCH-PUCCH processing time may bedefined by the number of slots. The length of the slot may be given atleast based on the maximum value and/or the minimum value of thesubcarrier spacing configurations p configured in the respective servingcells configured for the terminal apparatus 1. The length of the slotmay be given at least based on a subcarrier spacing configuration μconfigured in the serving cell in which the PUCCH is transmitted. Thelength of the slot may be given at least based on the maximum valueand/or the minimum value of the subcarrier spacing configurations pconfigured in the respective carrier bandwidth parts configured in therespective serving cells configured for the terminal apparatus 1. Thelength of the slot may be given at least based on the subcarrier spacingconfiguration μ configured in the carrier bandwidth part in which thePUCCH is transmitted. The HARQ-ACK corresponding to the PDCCH may be anHARQ-ACK corresponding to each of the one or multiple transport blocksincluded in the PDSCH included in the PDSCH scheduled in accordance withthe DCI format included in the PDCCH. The HARQ-ACK corresponding to thePDCCH may be an HARQ-ACK corresponding to the SPS release indicated inaccordance with the DCI format included in the PDCCH.

The first PDCCH-PUCCH processing time in a case that the PDSCH isscheduled in accordance with the DCI format including the Time-domainPDSCH resource field and the PDSCH-to-HARQ-timing-indicator field may begiven at least based on some or all of the first PDCCH processing timecorresponding to the DCI format and/or the first PDSCH processing timecorresponding to the DCI format. The set of the first PDCCH-PUCCHprocessing times corresponding to the DCI format may include the firstPDCCH-PUCCH processing times given at least based on some or all of thefirst PDCCH processing times included in the set of the first PDCCHprocessing times corresponding to the DCI format and/or the first PDSCHprocessing times included in the set of the first PDSCH processing timescorresponding to the DCI format.

The first PDCCH-PUCCH processing time in a case that the SPS release isindicated in accordance with the DCI format including the Time-domainPDSCH resource field and the PDSCH-to-HARQ-timing-indicator field may begiven at least based on some or all of the first PDCCH processing timecorresponding to the DCI format, the SPS release processing time, and/orthe first PDSCH processing time corresponding to the DCI format. The setof the first PDCCH-PUCCH processing times corresponding to the DCIformat may include the first PDCCH-PUCCH processing times given at leastbased on some or all of the first PDCCH processing times included in theset of the first PDCCH processing times corresponding to the DCI format,the SPS release processing time, and/or the first PDSCH processing timesincluded in the set of the first PDSCH processing times corresponding tothe DCI format.

The second PDCCH-PUCCH processing time in a case that the PDSCH isscheduled in accordance with the DCI format including the Time-domainPDSCH resource field and not including thePDSCH-to-HARQ-timing-indicator field may be given at least based on someor all of the first PDCCH processing time corresponding to the DCIformat and/or the second PDSCH processing time corresponding to the DCIformat. The set of the second PDCCH-PUCCH processing times correspondingto the DCI format may include the first PDCCH-PUCCH processing timegiven at least based on some or all of the first PDCCH processing timesincluded in the set of the first PDCCH processing times corresponding tothe DCI format and/or the second PDSCH processing time corresponding tothe DCI format.

The second PDCCH-PUCCH processing time in a case that the SPS release isindicated in accordance with the DCI format including the Time-domainPDSCH resource field and not including thePDSCH-to-HARQ-timing-indicator field may be given at least based on someor all of the first PDCCH processing time corresponding to the DCIformat, the SPS release processing time, and/or the second PDSCHprocessing time corresponding to the DCI format. The set of the secondPDCCH-PUCCH processing times corresponding to the DCI format may includethe first PDCCH-PUCCH processing times given at least based on some orall of the first PDCCH processing times included in the set of the firstPDCCH processing times corresponding to the DCI format, the SPS releaseprocessing time, and/or the second PDSCH processing times correspondingto the DCI format.

The third PDCCH-PUCCH processing time in a case that the PDSCH isscheduled in accordance with the DCI format not including theTime-domain PDSCH resource field but including thePDSCH-to-HARQ-timing-indicator field may be given at least based on someor all of the second PDCCH processing time corresponding to the DCIformat and/or the first PDSCH processing time corresponding to the DCIformat. The set of the third PDCCH-PUCCH processing times correspondingto the DCI format may include the third PDCCH-PUCCH processing timesgiven at least based on some or all of the second PDCCH processing timescorresponding to the DCI format, and/or the first PDSCH processing timesincluded in the set of the first PDSCH processing times corresponding tothe DCI format.

The third PDCCH-PUCCH processing time in a case that the SPS release isindicated in accordance with the DCI format not including theTime-domain PDSCH resource field but including thePDSCH-to-HARQ-timing-indicator field may be given at least based on someor all of the second PDCCH processing time corresponding to the DCIformat, and/or the first PDSCH processing time corresponding to the DCIformat. The set of the third PDCCH-PUCCH processing times correspondingto the DCI format may include the third PDCCH-PUCCH processing timesgiven at least based on some or all of the second PDCCH processing timescorresponding to the DCI format, and/or the first PDSCH processing timesincluded in the set of the first PDSCH processing times corresponding tothe DCI format.

The fourth PDCCH-PUCCH processing time in a case that the PDSCH isscheduled in accordance with the DCI format not including theTime-domain PDSCH resource field and not including thePDSCH-to-HARQ-timing-indicator field may be given at least based on someor all of the second PDCCH processing time corresponding to the DCIformat and/or the second PDSCH processing time corresponding to the DCIformat. The set of the fourth PDCCH-PUCCH processing times correspondingto the DCI format may include the fourth PDCCH-PUCCH processing timesgiven at least based on some or all of the second PDCCH processing timecorresponding to the DCI format and/or the second PDSCH processing timecorresponding to the DCI format.

The fourth PDCCH-PUCCH processing time in a case that the SPS release isindicated in accordance with the DCI format not including theTime-domain PDSCH resource field or the PDSCH-to-HARQ-timing-indicatorfield may be given at least based on some or all of the second PDCCHprocessing time corresponding to the DCI format and/or the second PDSCHprocessing time corresponding to the DCI format. The set of the fourthPDCCH-PUCCH processing times corresponding to the DCI format may includethe fourth PDCCH-PUCCH processing times given at least based on some orall of the second PDCCH processing time corresponding to the DCI formatand/or the second PDSCH processing time corresponding to the DCI format.

The first PDCCH-PUCCH processing time, the second PDCCH-PUCCH processingtime, the third PDCCH-PUCCH processing time, and the fourth PDCCH-PUCCHprocessing time are also referred to as the PDCCH-PUCCH processing time.

The set of the first PDCCH-PUCCH processing times, the set of the secondPDCCH-PUCCH processing times, the set of the third PDCCH-PUCCHprocessing times, and the set of the fourth PDCCH-PUCCH processing timesare also referred to as a set of PDCCH-PUCCH processing times.

In FIG. 1, the following downlink physical signals are used for thedownlink radio communication. The downlink physical signals may not beused for transmitting information output from a higher layer, but isused by the physical layer.

-   -   Synchronization signal (SS)    -   DownLink DeModulation Reference Signal (DL DMRS)    -   Channel State Information-Reference Signal (CSI-RS)    -   DownLink Phrase Tracking Reference Signal (DL PTRS)    -   Tracking Reference Signal (TRS)

The synchronization signal is used for the terminal apparatus 1 toestablish synchronization in a frequency domain and/or a time domain inthe downlink. The synchronization signal includes a PrimarySynchronization Signal (PSS) and a Second Synchronization Signal (SSS).

An SS block (SS/PBCH block) is configured to include at least some orall of the PSS, the SSS, and the PBCH. Respective antenna ports of someor all of the PSS, SSS, and PBCH included in the SS block may be thesame. Some or all of the PSS, SSS, and PBCH included in the SS block maybe mapped to continuous OFDM symbols. Respective CP configurations ofsome or all of the PSS, SSS, and PBCH included in the SS block may bethe same. Respective subcarrier spacing configurations p of some or allof the PSS, SSS, and PBCH included in the SS block may be the same.

The DL DMRS is associated with transmission of the PBCH, PDCCH and/orPDSCH. The DL DMRS is multiplexed with the PBCH, PDCCH and/or PDSCH. Theterminal apparatuses 1 may use the DL DMRS corresponding to the PBCH,PDCCH, or PDSCH in order to perform channel compensation of the PBCH,PDCCH or PDSCH. Hereinafter, transmission of both of the PBCH and the DLDMRS associated with the PBCH is simply referred to as transmission ofthe PBCH. Additionally, transmission of both of the PDCCH and the DLDMRS associated with the PDCCH is simply referred to as transmission ofthe PDCCH. In addition, transmission of both of the PDSCH and the DLDMRS associated with the PDSCH is simply referred to as transmission ofthe PDSCH. The DL DMRS associated with the PBCH is also referred to as aDL DMRS for the PBCH. The DL DMRS associated with the PDSCH is alsoreferred to as a DL DMRS for the PDSCH. The DL DMRS associated with thePDCCH is also referred to as a DL DMRS associated with the PDCCH.

The DL DMRS may be a reference signal individually configured for theterminal apparatus 1. The sequence of the DL DMRS may be given at leastbased on a parameter individually configured for the terminal apparatus1. The sequence of the DL DMRS may be given at least based on a UEspecific value (e.g., C-RNTI, or the like). The DL DMRS may beindividually transmitted for the PDCCH and/or the PDSCH.

The CSI-RS may be a signal at least used to calculate channel stateinformation. A pattern of the CSI-RS assumed by the terminal apparatusmay be given by at least a higher layer parameter.

The PTRS may be a signal to be at least used to compensate for phasenoise. A pattern of the PTRS assumed by the terminal apparatus may begiven at least based on a higher layer parameter and/or DCI.

The DL PTRS may be associated with a DL DMRS group that includes atleast an antenna port used for one or multiple DL DMRSs. The associationof the DL PTRS with the DL DMRS group may mean that the antenna port forthe DL PTRS and some or all of the antenna ports included in the DL DMRSgroup are at least QCL. The DL DMRS group may be identified at leastbased on the antenna port of the lowest index of antenna ports for theDL DMRS included in the DL DMRS group.

The TRS may be a signal to be at least used for time and/or frequencysynchronization. A pattern of the TRS assumed by the terminal apparatusmay be given at least based on a higher layer parameter and/or DCI.

Downlink physical channels and downlink physical signals arecollectively referred to as downlink signals. Uplink physical channelsand uplink physical signals are collectively referred to as uplinksignals. The downlink signals and the uplink physical signals arecollectively referred to as physical signals. The downlink signal andthe uplink signal are collectively referred to as signals. The downlinkphysical channels and the uplink physical channels are collectivelyreferred to as physical channels. The downlink physical signals and theuplink physical signals are collectively referred to as physicalsignals.

The Broadcast CHannel (BCH), the Uplink-Shared CHannel (UL-SCH), and theDownlink-Shared CHannel (DL-SCH) are transport channels. A channel usedin a Medium Access Control (MAC) layer is referred to as a transportchannel. A unit of the transport channel used in the MAC layer is alsoreferred to as a transport block (TB) or a MAC PDU. A Hybrid AutomaticRepeat reQuest (HARQ) is controlled for each transport block in the MAClayer. The transport block is a unit of data that the MAC layer deliversto the physical layer. In the physical layer, the transport block ismapped to a codeword, and a modulation process is performed for eachcodeword.

The base station apparatus 3 and the terminal apparatus 1 exchange(transmit and/or receive) higher layer signaling in the higher layer.For example, the base station apparatus 3 and the terminal apparatus 1may transmit and/or receive Radio Resource Control (RRC) signaling (alsoreferred to as a Radio Resource Control (RRC) message or Radio ResourceControl (RRC) information) in an RRC layer. Furthermore, the basestation apparatus 3 and the terminal apparatus 1 may transmit and/orreceive, in the MAC layer, a MAC Control Element (CE). Here, the RRCsignaling and/or the MAC CE is also referred to as higher layersignaling.

The PUSCH and the PDSCH are used at least to transmit the RRC signalingand/or the MAC CE. Here, the RRC signaling transmitted from the basestation apparatus 3 through the PDSCH may be signaling common tomultiple terminal apparatuses 1 in a serving cell. The signaling commonto the multiple terminal apparatuses 1 in the serving cell is alsoreferred to as common RRC signaling. The RRC signaling transmitted fromthe base station apparatus 3 through the PDSCH may be signalingdedicated to a certain terminal apparatus 1 (also referred to asdedicated signaling or UE specific signaling). The signaling dedicatedto the terminal apparatus 1 is also referred to as dedicated RRCsignaling. A serving cell-specific higher layer parameter may betransmitted by using the signaling common to the multiple terminalapparatuses 1 in the serving cell or the signaling dedicated to acertain terminal apparatus 1. A UE-specific higher layer parameter maybe transmitted by using the signaling dedicated to the certain terminalapparatus 1.

A Broadcast Control CHannel (BCCH), a Common Control CHannel (CCCH), anda Dedicated Control CHannel (DCCH) are logical channels. For example,the BCCH is a higher layer channel used to transmit the MIB.Furthermore, the Common Control CHannel (CCCH) is a higher layer channelused to transmit information common to the multiple terminal apparatuses1. Here, the CCCH may be used for a terminal apparatus 1 that is not inan RRC connected state, for example. Furthermore, the Dedicated ControlCHannel (DCCH) is a higher layer channel at least used to transmitcontrol information dedicated to the terminal apparatus 1 (dedicatedcontrol information). Here, the DCCH may be used for a terminalapparatus 1 that is in an RRC connected state, for example.

The BCCH in the logical channel may be mapped to the BCH, the DL-SCH, orthe UL-SCH in the transport channel. The CCCH in the logical channel maybe mapped to the DL-SCH or the UL-SCH in the transport channel. The DCCHin the logical channel may be mapped to the DL-SCH or the UL-SCH in thetransport channel.

The UL-SCH in the transport channel may be mapped to the PUSCH in thephysical channel. The DL-SCH in the transport channel may be mapped tothe PDSCH in the physical channel. The BCH in the transport channel maybe mapped to the PBCH in the physical channel.

A configuration example of the terminal apparatus 1 according to the oneaspect of the present embodiment will be described below.

FIG. 5 is a schematic block diagram illustrating a configuration of theterminal apparatus 1 according to one aspect of the present embodiment.As illustrated, the terminal apparatus 1 is configured to include aradio transmission and/or reception unit 10 and a higher layerprocessing unit 14. The radio transmission and/or reception unit 10 isconfigured to include at least some or all of an antenna unit 11, aRadio Frequency (RF) unit 12, and a baseband unit 13. The higher layerprocessing unit 14 is configured to include at least some or all of amedium access control layer processing unit 15 and a radio resourcecontrol layer processing unit 16. The radio transmission and/orreception unit 10 is also referred to as a transmitter, a receiver or aphysical layer processing unit.

The higher layer processing unit 14 outputs uplink data (transportblock) generated by a user operation or the like, to the radiotransmission and/or reception unit 10. The higher layer processing unit14 performs processing of a MAC layer, a Packet Data ConvergenceProtocol (PDCP) layer, a Radio Link Control (RLC) layer, and an RRClayer.

The medium access control layer processing unit 15 included in thehigher layer processing unit 14 performs processing of the MAC layer.

The radio resource control layer processing unit 16 included in thehigher layer processing unit 14 performs processing of the RRC layer.The radio resource control layer processing unit 16 manages varioustypes of configuration information/parameters of the terminal apparatus1. The radio resource control layer processing unit 16 sets varioustypes of configuration information/parameters based on a higher layersignaling received from the base station apparatus 3. Namely, the radioresource control layer processing unit 16 sets the various configurationinformation/parameters in accordance with the information for indicatingthe various configuration information/parameters received from the basestation apparatus 3. The parameters may be higher layer parameters.

The radio transmission and/or reception unit 10 performs processing ofthe physical layer, such as modulation, demodulation, coding, decoding,and the like. The radio transmission and/or reception unit 10demultiplexes, demodulates, and decodes a received physical signal andoutputs the decoded information to the higher layer processing unit 14.The radio transmission and/or reception unit 10 generates a physicalsignal by performing modulation and coding of data, and generating abaseband signal (conversion into a time continuous signal), andtransmits the physical signal to the base station apparatus 3.

The RF unit 12 converts (down-converts) a signal received via theantenna unit 11 into a baseband signal by orthogonal demodulation andremoves unnecessary frequency components. The RF unit 12 outputs aprocessed analog signal to the baseband unit.

The baseband unit 13 converts the analog signal input from the RF unit12 into a digital signal. The baseband unit 13 removes a portioncorresponding to a Cyclic Prefix (CP) from the converted digital signal,performs a Fast Fourier Transform (FFT) of the signal from which the CPhas been removed, and extracts a signal in the frequency domain.

The baseband unit 13 generates an OFDM symbol by performing Inverse FastFourier Transform (IFFT) of the data, adds CP to the generated OFDMsymbol, generates a baseband digital signal, and converts the basebanddigital signal into an analog signal. The baseband unit 13 outputs theconverted analog signal to the RF unit 12.

The RF unit 12 removes unnecessary frequency components from the analogsignal input from the baseband unit 13 by using a low-pass filter,up-converts the analog signal into a signal of a carrier frequency, andtransmits the up-converted signal via the antenna unit 11. Furthermore,the RF unit 12 amplifies power. Furthermore, the RF unit 12 may have afunction of controlling transmit power. The RF unit 12 is also referredto as a transmit power control unit.

A configuration example of the base station apparatus 3 according to oneaspect of the present embodiment will be described below.

FIG. 6 is a schematic block diagram illustrating a configuration of thebase station apparatus 3 according to one aspect of the presentembodiment. As illustrated, the base station apparatus 3 is configuredto include a radio transmission and/or reception unit 30 and a higherlayer processing unit 34. The radio transmission and/or reception unit30 is configured to include an antenna unit 31, an RF unit 32, and abaseband unit 33. The higher layer processing unit 34 is configured toinclude a medium access control layer processing unit 35 and a radioresource control layer processing unit 36. The radio transmission and/orreception unit 30 is also referred to as a transmitter, a receiver or aphysical layer processing unit.

The higher layer processing unit 34 performs processing of a MAC layer,a PDCP layer, an RLC layer, and an RRC layer.

The medium access control layer processing unit 35 included in thehigher layer processing unit 34 performs processing of the MAC layer.

The radio resource control layer processing unit 36 included in thehigher layer processing unit 34 performs processing of the RRC layer.The radio resource control layer processing unit 36 generates, oracquires from a higher node, downlink data (transport block) allocatedon a PDSCH, system information, an RRC message, a MAC CE, and the like,and outputs the data to the radio transmission and/or reception unit 30.Furthermore, the radio resource control layer processing unit 36 managesvarious types of configuration information/parameters for each of theterminal apparatuses 1. The radio resource control layer processing unit36 may set various types of configuration information/parameters foreach of the terminal apparatuses 1 via higher layer signaling. That is,the radio resource control layer processing unit 36 transmits/reportsinformation indicating various types of configurationinformation/parameters.

The functionality of the radio transmission and/or reception unit 30 issimilar to the functionality of the radio transmission and/or receptionunit 10, and hence description thereof is omitted.

Each of the units having the reference signs 10 to 16 included in theterminal apparatus 1 may be configured as a circuit. Each of the unitshaving the reference signs 30 to 36 included in the base stationapparatus 3 may be configured as a circuit.

Various aspect examples according to one aspect of the presentembodiment will be described below.

A serving cell group 100 may be a set of serving cells configured in theterminal apparatus 1. The serving cell group 100 may include one ormultiple serving cells included in the Master Cell Group (MCG). The MCGmay include at least a Primary cell. The primary cell may be a servingcell that is at least used for initial access. The subcarrier spacingconfiguration μ configured in the serving cell group 100 may be thesame.

In a case that a Secondary Cell Group (SCG) is configured in theterminal apparatus 1 and one or multiple PDSCHs are received in one ormultiple serving cells included in the SCG, the serving cell group 100may include the one or multiple serving cells included in the SCG. Atleast the primary cell may be omitted from the configuration of the SCG.The SCG may include at least a Primary Secondary Cell (PSCell). PRACHresources may be configured for the primary secondary cell. PUCCHresources may be configured for the primary secondary cell.

In a case that a PUCCH-SCell is configured in the terminal apparatus 1and one or multiple PDSCHs are received in one or multiple serving cellsincluded in a PUCCH group including at least the PUCCH-SCell, theserving cell group 100 may include the one or multiple serving cellsincluded in the PUCCH group. PUCCH resources may be configured for thePUCCH-SCell.

For transmission of HARQ-ACK bits corresponding to one or multipletransport blocks included in one or multiple PDSCHs transmitted in oneor multiple downlink carriers included in the serving cell group 100, anHARQ-ACK code book including at least the HARQ-ACK bit may be generated.The HARQ-ACK code book may be transmitted on the PUCCH in the uplinkcarrier included in the serving cell group 100.

The uplink carrier in which the PUCCH is transmitted may be included inthe primary cell. In a case that the serving cell group 100 is an MCG,the uplink carrier in which the PUCCH is transmitted may be included inthe primary cell included in the MCG. In a case that the serving cellgroup 100 is an SCG, the uplink carrier in which the PUCCH istransmitted may be included in the primary secondary cell included inthe SCG. In a case that the serving cell group 100 is a PUCCH group, theuplink carrier in which the PUCCH is transmitted may be included in thePUCCH-SCell included in the PUCCH group.

FIG. 7 is a diagram illustrating an example of a procedure fortransmission of the HARQ-ACK code book 1000 according to one aspect ofthe present embodiment. In M PDCCH monitoring occasions 1001 associatedwith the HARQ-ACK code book 1000 in FIG. 7, a PDCCH 1002 a, a PDCCH 1002b, and a PDCCH 1002 c are transmitted. The PDCCH 1002 a, the PDCCH 1002b, and the PDCCH 1002 c are also referred to as the PDCCH 1002. The MPDCCH monitoring occasions 1001 associated with the HARQ-ACK code book1000 will be described below.

The PDCCH 1002 a includes a DCI format 1003 a. The PDCCH 1002 b includesa DCI format 1003 b. The PDCCH 1002 c includes a DCI format 1003 c.

The DCI format 1003 a schedules a PDSCH 1004 a. The DCI format 1003 bschedules a PDSCH 1004 b. The DCI format 1003 c indicates an SPS release1005.

The DCI format 1003 a, the DCI format 1003 b, and the DCI format 1003are also referred to as the DCI format 1003. The PDSCH 1004 a and thePDSCH 1004 b are also referred to as the PDSCH 1004.

The DCI format 1003 may include a DCI format detected in the M PDCCHmonitoring occasions 1001 associated with the HARQ-ACK code book 1000.

The HARQ-ACK code book 1000 includes at least some or all of HARQ-ACKbits 1006 respectively corresponding to the one or multiple transportblocks included in the PDSCH 1004 and/or an HARQ-ACK bit 1007corresponding to an SPS release 1005.

The HARQ-ACK code book 1000 is included in a PUCCH 1008, which istransmitted.

The s-th bit of the sequence of the HARQ-ACK code book 1000 is given byo^(ACK) _(a)(s−1). The length of the sequence of the HARQ-ACK code book1000 is O^(ACK). In other words, s is an integer value ranging from 0 toO^(ACK)−1.

FIG. 8, FIG. 9, and FIG. 10 are diagrams illustrating an example of aconfiguration of the HARQ-ACK code book 1000 according to one aspect ofthe present embodiment. <AX> in FIG. 8, FIG. 9, and FIG. 10 is alsoreferred to as step AX. In FIG. 8, FIG. 9, and FIG. 10, “A=B” mayindicate that A is set to B.

In step A1, a serving cell index c is set to 0. The serving cell indexmay be given for each serving cell at least based on a higher layerparameter.

In step A2, m=0 is set. m may indicate the index of the PDCCH monitoringoccasion including at least one or both of the first DCI format and/orthe second DCI format. The index of the PDCCH monitoring occasion may beused to identify the monitoring occasion of the M PDCCH monitoringoccasions 1001 associated with the HARQ-ACK code book 1000. In m, thelower index may correspond to the earlier of the PDCCH monitoringoccasions including at least one or both of the first DCI format and/orthe second DCI format. In m, the lower index may correspond to theearlier of the PDCCH monitoring occasions including at least one or bothof the first DCI format and/or the second DCI format and included in theM PDCCH monitoring occasions 1001.

In step A3, j may be set to 0.

In step A4, V_(temp) may be set to 0.

In step A5, V_(temp2) may be set to 0.

In step A6, V_(s)=φ may be set. Φ denotes an empty set.

In step A7, N^(DL) _(cells) may be set to the number of serving cells.The number of serving cells may be the number of serving cells includedin the serving cell group 100. The number of serving cells may be thenumber of serving cells configured for the terminal apparatus 1. In acase that the terminal apparatus 1 is configured with the SCG and aPUCCH 1008 including the HARQ-ACK code book 1000 is transmitted on theuplink carrier included in the primary secondary cell included in theSCG, the number of serving cells may be the number of serving cellsincluded in the SCG. In a case that the terminal apparatus 1 isconfigured with the SCG and the PUCCH 1008 including the HARQ-ACK codebook 1000 is transmitted on the uplink carrier included in the primarycell included in the MCG, the number of serving cells may be the numberof serving cells included in the MCG. In a case that the terminalapparatus 1 is configured with a PUCCH group and the PUCCH 1008including the HARQ-ACK code book 1000 is transmitted on the uplinkcarrier included in the PUCCH-SCell included in the PUCCH group, thenumber of serving cells may be the number of serving cells included inthe PUCCH group.

In step A8, M may be set to the number M of PDCCH monitoring occasions1001 associated with the HARQ-ACK code book 1000. The number M of PDCCHmonitoring occasions 1001 associated with the HARQ-ACK code book 1000may include at least the PDCCH monitoring occasions on which some or allof the HARQ-ACKs (HARQ-ACK 1006 and/or HARQ-ACK 1007) included in theHARQ-ACK code book 1000 is detected.

The number M of PDCCH monitoring occasions associated with the HARQ-ACKcode book 1000 may be the number of PDCCH monitoring occasions includedin the range from the first slot to the second slot. The first slot maybe given at least based on some or all of the maximum value of the setof PDCCH-PUCCH processing times corresponding to the DCI format 1003,monitoring occasions for search space sets for which the DCI format 1003is configured, and/or the slot indexes of the slots in which the PUCCH1008 is transmitted. The second slot may be given at least based on someor all of the minimum value of the set of PDCCH-PUCCH processing timescorresponding to the DCI format 1003, monitoring occasions for searchspace sets for which the DCI format 1003 is configured, and/or the slotindexes of the slots in which the PUCCH 1008 is transmitted.

The maximum value of the set of PDCCH-PUCCH processing times may begiven at least based on some or all of the maximum value of the set ofPDCCH processing times corresponding to the DCI format and/or themaximum value of the set of PDSCH processing times corresponding to theDCI format.

The minimum value of the set of PDCCH-PUCCH processing times may begiven at least based on a minimum value of a set of PDCCH processingtimes corresponding to the DCI format and/or a minimum value of a set ofPDSCH processing times corresponding to the DCI format.

The first slot may be given at least based on some or all of thePDCCH-PUCCH processing times corresponding to each of the DCI formats1003. The first slot may be given at least based on the maximum value ofthe PDCCH-PUCCH processing time corresponding to each of the DCI formats1003. In other words, the first slot may be given at least based on themaximum value of the PDCCH-PUCCH processing time corresponding to eachof some or all of the DCI formats detected in the M PDCCH monitoringoccasion 1001 associated with the HARQ-ACK code book 1000.

The second slot may be given at least based on some or all of thePDCCH-PUCCH processing times corresponding to each of the DCI formats1003. The second slot may be given at least based on the minimum valueof the PDCCH-PUCCH processing time corresponding to each of the DCIformats 1003. In other words, the second slot may be given at leastbased on the minimum value of the PDCCH-PUCCH processing timescorresponding to each of some or all of the DCI format detected in the MPDCCH monitoring occasions 1001 associated with the HARQ-ACK code book1000.

In step A9, the first evaluation formula m<M is evaluated. In a casethat the first evaluation formula is true, step A10 may be performed. Ina case that the first evaluation formula is false, step A34 may beperformed.

In step A10, a second evaluation formula c<N^(DL) _(cells) is evaluated.In a case that the second evaluation formula is true, step A11 may beperformed. In a case that the second evaluation formula is false, stepA32 may be performed.

In step A11, in a case that, in the PDCCH monitoring occasion m in theserving cell c, the PDCCH 1002 including the DCI format 1003 forscheduling the PDSCH 1004 is received, and/or in the PDCCH monitoringoccasion m in the serving cell c, the PDCCH 1002 including the DCIformat 1003 indicating the SPS release 1005 is received, then step A12may be performed.

In step A11, in a case that, in the PDCCH monitoring occasion m in theserving cell c, the PDCCH 1002 including the DCI format 1003 forscheduling PDSCH 1004 is not received or in the PDCCH monitoringoccasion m in the serving cell c, the PDCCH 1002 including the DCIformat 1003 indicating the SPS release 1005 is not received, then stepA30 may be performed.

In step A12, a third evaluation formula V^(DL) _(C-DAI, c, m)≤V_(temp)is evaluated. In a case that the third evaluation formula is true, stepA13 may be performed. In a case that the third evaluation formula isfalse, step A14 may be performed.

The value of a Downlink Assignment Index (DAI) given at least based onthe PDCCH 1002 detected in the PDCCH monitoring occasion m in theserving cell c. The counter DAI may be included in the first DCI format.The counter DAI may not be included in the first DCI format. The counterDAI may be included in the second DCI format. The counter DAI indicates,in the M PDCCH monitoring occasions 1001 associated with the HARQ-ACKcode book 1000, the cumulative number of PDCCHs 1002 detected before thePDCCH monitoring occasion m in the serving cell c (or the counter DAImay be a value at least associated with the cumulative number). Indetermination of the cumulative number, as the index of each PDCCH 1002detected in the M monitoring occasions 1001 associated with the HARQ-ACKcode book 1000, the serving cell index c may be given first and thePDCCH monitoring occasion m may be given second. In other words, theindexes of PDCCHs 1002 detected in the M monitoring occasions 1001associated with the HARQ-ACK code book 1000 may be mapped in the orderfirst of the serving cell index c and then of the PDCCH monitoringoccasions m (serving cell index first, PDCCH monitoring occasion secondmapping).

In step A13, j may be set to j+1.

Step A14 may be a step indicating completion of the operation based onthe third evaluation formula in step A12.

In step A15, V_(temp) may be set to V^(DL) _(C-DAI, c, m).

In step A16, a fourth evaluation formula V^(DL) _(T-DAI, m)=φ may beevaluated. In a case that the fourth evaluation formula is true, stepA17 may be performed. In a case that the fourth evaluation formula isfalse, step A18 may be performed.

V^(DL) _(T-DAI, m) is the value of the total DAI given at least based onthe PDCCH detected in the PDCCH monitoring occasion m in the servingcell c. The total DAI may be included in the first DCI format. The totalDAI need not be included in the first DCI format. The total DAI may beincluded in the second DCI format. The total DAI indicates thecumulative number of PDCCHs 1002 detected before the PDCCH monitoringoccasion m in the M PDCCH monitoring occasions 1001 associated with theHARQ-ACK code book 1000 (or the total DAI may be a value at leastassociated with the cumulative number).

In step A17, V_(temp2) may be set to V^(DL) _(T-DAI, c, m).

In step A18, step A19 may be performed.

In step A19, V_(temp2) may be set to V^(DL) _(T-DAI, m).

In step A20, in a case that 1) the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is not set to true, 2) at least oneserving cell in the M PDCCH monitoring occasions 1001 associated withthe HARQ-ACK code book 1000 includes at least one monitoring occasionfor the search space set configured with monitoring of the second DCIformat, and/or 3) the higher layer parameter Number-MCS-HARQ-DL-DCI isset to indicate that one PDSCH in the at least one serving cell includestwo transport blocks, then step A21 may be performed.

The higher layer parameter HARQ-ACK-spatial-bundling-PUCCH being not setto true may mean the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH being set to false.

In step A21, o^(ACK) _(a) (8j+2(V^(DL) _(C-DAI, c, m)−1)) may be set tothe value of the HARQ-ACK bit corresponding to the first transport blockin the serving cell c. The HARQ-ACK bit having a value of 1 may indicatean ACK. The HARQ-ACK bit having a value of 0 may indicate a NACK. Thefirst transport block of the serving cell c may be the first transportblock included in the PDSCH 1004 scheduled in accordance with the DCIformat included in the PDCCH 1002 detected in the PDCCH monitoringoccasion m in the serving cell c.

In step A22, o^(ACK) _(a) (8j+2 (V^(DL) _(C-DAI, c, m)−1)+1) may be setto the value of the HARQ-ACK bit corresponding to the second transportblock in the serving cell c. The second transport block of the servingcell c may be the second transport block included in PDSCH 1004scheduled in accordance with the DCI format included in the PDCCH 1002detected in the PDCCH monitoring occasion m in the serving cell c.

In a case that the PDSCH 1004 scheduled in accordance with the DCIformat 1003 included in the PDCCH 1002 detected in the PDCCH monitoringoccasion m in the serving cell c includes a first transport block andthat the PDSCH 1004 does not include the second transport block, towhich value of the o^(ACK) _(a) (8j+2) (V^(DL) _(C-DAI, c, m)−1)+1) isset may be given at least based on 1) whether at least one serving cellin the M PDCCH monitoring occasions 1001 associated with the HARQ-ACKcode book 1000 includes at least one monitoring occasion for the searchspace set configured with monitoring of the second DCI format or not, 2)whether the higher layer parameter Number-MCS-HARQ-DL-DCI is set toindicate that one PDSCH in the at least one serving cell includes twotransport blocks or not, and/or 3) whether the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is set to true or not. O^(ACK) _(a)(8j+2(V^(DL) _(C-DAI, c, m)−1)+1) is also referred to as a secondHARQ-ACK bit corresponding to the second transport block.

The PDSCH 1004 including the first transport block and not including thesecond transport block may mean the PDSCH 1004 including one transportblock.

In step A22, in a case that 1) the PDSCH 1004 scheduled in accordancewith the DCI format 1003 included in PDCCH 1002 detected in themonitoring occasion m of the PDCCH in the serving cell c includes thefirst transport block and that 2) the PDSCH 1004 does not include thesecond transport block, then the second HARQ-ACK bit for the secondtransport block may be set to NACK, and the second HARQ-ACK bit may beset to o^(ACK) _(a) (8j+2(V^(DL) _(C-DAI, c, m)−1)+1).

In other words, in a case that 1) the PDSCH 1004 scheduled in accordancewith the DCI format 1003 included in the PDCCH 1002 detected in thePDCCH monitoring occasion m in the serving cell c includes the firsttransport block, 2) the PDSCH 1004 does not include the second transportblock, 3) at least one serving cell in the M PDCCH monitoring occasions1001 associated with the HARQ-ACK code book 1000 includes at least onemonitoring occasion for the search space set configured with monitoringof the second DCI format, 4) the higher layer parameterNumber-MCS-HARQ-DL-DCI is set to indicate that one PDSCH in the at leastone serving cell includes two transport blocks, and/or 5) the higherlayer parameter HARQ-ACK-spatial-bundling-PUCCH is not set to true, thenthe second HARQ-ACK bit for the second transport block may be set toNACK and the second HARQ-ACK bit may be set to o^(ACK) _(a) (8j+2(V^(DL)_(C-DAI, c, m)−1)+1).

In step A23, V_(s) may be set to V_(s)∪{8j+2(V^(DL) _(C-DAI, c, m)−1),8j+2 (V^(DL) _(C-DAI, c, m)−1)+1}. Y∪Z may indicate the union of a set Yand a set Z. {*} may be a set including *.

In step A24, in a case that 1) the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is set to true, 2) at least one servingcell in the M PDCCH monitoring occasions 1001 associated with theHARQ-ACK code book 1000 includes at least one monitoring occasion forthe search space set configured with monitoring of the second DCIformat, and/or 3) the higher layer parameter Number-MCS-HARQ-DL-DCI isset to indicate that one PDSCH in the at least one serving cell includestwo transport blocks, then step A25 may be performed.

In step A25, o^(ACK) _(a) (4j+V^(DL) _(C-DAI, c, m)−1) may be set to avalue given by a binary AND operation of the first HARQ-ACK bitcorresponding to the first transport block in the serving cell c and thesecond HARQ-ACK bit corresponding to the second transport block in theserving cell c.

In step A25, in a case that 1) the PDSCH 1004 scheduled in accordancewith the DCI format 1003 included in PDCCH 1002 detected in themonitoring occasion m of the PDCCH in the serving cell c includes thefirst transport block, and 2) the PDSCH 1004 does not include the secondtransport block, then the second HARQ-ACK bit for the second transportblock may be set to ACK and the result of the binary AND operation ofthe first HARQ-ACK bit and the second HARQ-ACK bit may be set to o^(ACK)_(a) (4j+V^(DL) _(C-DAI, c, m)−1).

In other words, in a case that 1) the PDSCH 1004 scheduled in accordancewith the DCI format 1003 included in the PDCCH 1002 detected in thePDCCH monitoring occasion m in the serving cell c includes the firsttransport block, 2) the PDSCH 1004 does not include the second transportblock, 3) at least one serving cell in the M PDCCH monitoring occasions1001 associated with the HARQ-ACK code book 1000 includes at least onemonitoring occasion for the search space set configured with monitoringof the second DCI format, 4) the higher layer parameterNumber-MCS-HARQ-DL-DCI is set to indicate that one PDSCH in the at leastone serving cell includes two transport blocks, and/or 5) the higherlayer parameter HARQ-ACK-spatial-bundling-PUCCH is set to true, then thesecond HARQ-ACK bit for the second transport block may be set to ACK andthe result of the binary AND operation of the first HARQ-ACK bit and thesecond HARQ-ACK bit may be set to o^(ACK) _(a) (4j+V^(DL)_(C-DAI, c, m)−1).

In step A25, in a case that 1) the PDSCH 1004 scheduled in accordancewith the DCI format 1003 included in PDCCH 1002 detected in the PDCCHmonitoring occasion m in the serving cell c includes the first transportblock, 2) the PDSCH 1004 does not include the second transport block,and/or 3) the value of o^(ACK) _(a) (4j+V^(DL) _(C-DAI, c, m)−1) isgiven by the binary AND operation of the first HARQ-ACK bit and thesecond HARQ-ACK bit corresponding to the first transport block, then thesecond HARQ-ACK bit may be set to ACK. Here, the value of o^(ACK) _(a)(4j+V^(DL) _(C-DAI, c, m)−1) being given by the binary AND operation ofthe first HARQ-ACK bit and the second HARQ-ACK bit corresponding to thefirst transport block may mean application of spatial bundling.

In other words, in a case that 1) the PDSCH 1004 scheduled in accordancewith the DCI format 1003 included in the PDCCH 1002 detected in thePDCCH monitoring occasion m in the serving cell c includes the firsttransport block, 2) the PDSCH 1004 does not include the second transportblock, 3) at least one serving cell in the M PDCCH monitoring occasions1001 associated with the HARQ-ACK code book 1000 includes at least onemonitoring occasion for the search space set configured with monitoringof the second DCI format, 4) the higher layer parameterNumber-MCS-HARQ-DL-DCI is set to indicate that one PDSCH in the at leastone serving cell includes two transport blocks, and/or 5) the value ofo^(ACK) _(a) (4j+V^(DL) _(C-DAI, c, m)−1) is given by the binary ANDoperation of the first HARQ-ACK bit and the second HARQ-ACK bitcorresponding to the first transport block, then the second HARQ-ACK bitmay be set to ACK.

1) At least based on some or all of 1) whether the PDSCH 1004 scheduledin accordance with the DCI format 1003 included in the PDCCH 1002detected in the PDCCH monitoring occasion m in the serving cell cincludes the first transport block, 2) whether the PDSCH 1004 includesthe second transport block, 3) whether at least one serving cell in theM PDCCH monitoring occasions 1001 associated with the HARQ-ACK code book1000 includes at least one monitoring occasion for the search space setconfigured with monitoring of the second DCI format, 4) whether thehigher layer parameter Number-MCS-HARQ-DL-DCI is set to indicate thatone PDSCH in the at least one serving cell includes two transportblocks, and/or 5) whether the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is set to true, o^(ACK) _(a)(8j+2(V^(DL) _(C-DAI, c, m)−1)+1) may be set to ACK or NACK.

In a case that 1) the PDSCH 1004 scheduled in accordance with the DCIformat 1003 included in the PDCCH 1002 detected in the PDCCH monitoringoccasion m in the serving cell c includes the first transport block, 2)the PDSCH 1004 does not include the second transport block, 3) at leastone serving cell in the M PDCCH monitoring occasions 1001 associatedwith the HARQ-ACK code book 1000 includes at least one monitoringoccasion for the search space set configured with monitoring of thesecond DCI format, and 4) the higher layer parameterNumber-MCS-HARQ-DL-DCI is set to indicate that one PDSCH in the at leastone serving cell includes two transport blocks, then based on whetherthe higher layer parameter HARQ-ACK-spatial-bundling-PUCCH is set totrue, o^(ACK) _(a) (8j+2(V^(DL) _(C-DAI, c, m)−1)+1) may be set to ACKor NACK.

In a case that 1) the PDSCH 1004 scheduled in accordance with the DCIformat 1003 included in the PDCCH 1002 detected in the PDCCH monitoringoccasion m in the serving cell c includes the first transport block, 2)the PDSCH 1004 does not include the second transport block, 3) at leastone serving cell in the M PDCCH monitoring occasions 1001 associatedwith the HARQ-ACK code book 1000 includes at least one monitoringoccasion for the search space set configured with monitoring of thesecond DCI format, 4) the higher layer parameter Number-MCS-HARQ-DL-DCIis set to indicate that one PDSCH in the at least one serving cellincludes two transport blocks, and/or 5) the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is not set to true, then o^(ACK) _(a)(8j+2(V^(DL) _(C-DAI, c, m)−1)+1) may be set to NACK.

At least based on some or all of 1) whether the PDSCH 1004 scheduled inaccordance with the DCI format 1003 included in the PDCCH 1002 detectedin the PDCCH monitoring occasion m in the serving cell c includes thefirst transport block, 2) whether the PDSCH 1004 includes the secondtransport block, 3) whether at least one serving cell in the M PDCCHmonitoring occasions 1001 associated with the HARQ-ACK code book 1000includes at least one monitoring occasion for the search space setconfigured with monitoring of the second DCI format, 4) whether thehigher layer parameter Number-MCS-HARQ-DL-DCI is set to indicate thatone PDSCH in the at least one serving cell includes two transportblocks, and/or 5) whether the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is set to true, the second HARQ-ACK bitmay be set to ACK or NACK.

In a case that 1) the PDSCH 1004 scheduled in accordance with the DCIformat 1003 included in the PDCCH 1002 detected in the PDCCH monitoringoccasion m in the serving cell c includes the first transport block, 2)the PDSCH 1004 does not include the second transport block, 3) at leastone serving cell in the M PDCCH monitoring occasions 1001 associatedwith the HARQ-ACK code book 1000 includes at least one monitoringoccasion for the search space set configured with monitoring of thesecond DCI format, and 4) the higher layer parameterNumber-MCS-HARQ-DL-DCI is set to indicate that one PDSCH in the at leastone serving cell includes two transport blocks, then based on whetherthe higher layer parameter HARQ-ACK-spatial-bundling-PUCCH is set totrue, the second HARQ-ACK bit may be set to ACK or NACK.

In a case that 1) the PDSCH 1004 scheduled in accordance with the DCIformat 1003 included in the PDCCH 1002 detected in the PDCCH monitoringoccasion m in the serving cell c includes the first transport block, 2)the PDSCH 1004 does not include the second transport block, 3) at leastone serving cell in the M PDCCH monitoring occasions 1001 associatedwith the HARQ-ACK code book 1000 includes at least one monitoringoccasion for the search space set configured with monitoring of thesecond DCI format, 4) the higher layer parameter Number-MCS-HARQ-DL-DCIis set to indicate that one PDSCH in the at least one serving cellincludes two transport blocks, and/or 5) the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is not set to true, then the secondHARQ-ACK bit may be set to NACK.

In step A26, V_(s) may be set to V_(s)∪{4j+V^(DL) _(C-DAI, c, m)−1}.

In step A27, at least in the M PDCCH monitoring occasions 1001associated with the HARQ-ACK code book 1000, step A28 may be performedin a case that the monitoring occasion for the search space setconfigured with monitoring of the second DCI format is not included inany serving cell.

In step A27, in a case that at least one serving cell at least in the MPDCCH monitoring occasions 1001 associated with the HARQ-ACK code book1000 includes at least one monitoring occasion for the search space setconfigured with monitoring of the second DCI format and/or that at leastthe higher layer parameter Number-MCS-HARQ-DL-DCI is not set to indicatethat one PDSCH in the at least one serving cell receives two transportblocks, then step A28 may be performed.

In step A28, o^(ACK) _(a) (4j+V^(DL) _(C-DAI, c, m)−1) may be set to thevalue of the first HARQ-ACK bit corresponding to the first transportblock in the serving cell c. In step A28, o^(ACK) _(a) (4j+V^(DL)_(C-DAI, c, m)−1) may be set to the value of the HARQ-ACK bit in theserving cell c.

In step A29, V_(s) may be set to V_(s)∪{4j+V^(DL) _(C-DAI, c, m)−1}.

Step A30 may be a step indicating completion of the operation of stepA11.

In step A31, c may be set to c+1.

In step A32, step A10 may be performed.

In step A33, m may be set to m+1.

In step A34, step A9 may be performed.

Whether each of the first HARQ-ACK bit corresponding to the firsttransport block included in the PDSCH 1004 and the second HARQ-ACK bitcorresponding to the second transport block included in the PDSCH isincluded in the HARQ-ACK code book 1000 or not may be given at leastbased on some or all of 1) whether higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is set to true or not, 2) whether atleast one serving cell in the M PDCCH monitoring occasions 1001associated with the HARQ-ACK code book 1000 includes at least onemonitoring occasion for the search space set configured with monitoringof the second DCI format or not, and/or 3) whether the higher layerparameter Number-MCS-HARQ-DL-DCI is set to indicate that one PDSCH inthe at least one serving cell receives two transport blocks or not.

Whether the value given by the binary AND operation of the firstHARQ-ACK bit corresponding to the first transport block included in thePDSCH 1004 and the second HARQ-ACK bit corresponding to the secondtransport block included in the PDSCH 1004 is included in the HARQ-ACKcode book 1000 or not may be given at least based on some or all of 1)whether the higher layer parameter HARQ-ACK-spatial-bundling-PUCCH isset to true or not, 2) whether at least one serving cell in the M PDCCHmonitoring occasions 1001 associated with the HARQ-ACK code book 1000includes at least one monitoring occasion for the search space setconfigured with monitoring of the second DCI format or not, and/or 3)whether the higher layer parameter Number-MCS-HARQ-DL-DCI is set toindicate that one PDSCH in the at least one serving cell receives twotransport blocks or not.

In step A35, a fifth evaluation formula V_(temp2)<V_(temp) may beperformed. In a case that the fifth evaluation formula is true, step A36may be performed. In a case that the fifth evaluation formula is false,step A37 may be performed.

In step A36, j_(n) may be set to j+1.

Step A37 may be a step indicating completion of step A35.

In step A38, in a case that 1) the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is not set to true, 2) at least oneserving cell in the M PDCCH monitoring occasions 1001 associated withthe HARQ-ACK code book 1000 includes at least one monitoring occasionfor the search space set configured with monitoring of the second DCIformat, and/or 3) the higher layer parameter Number-MCS-HARQ-DL-DCI isset to indicate that one PDSCH in the at least one serving cell includestwo transport blocks, then step A39 may be performed.

In step A39, an O_(ACK) may be set to 2 (4j+V_(temp2)).

In step A40, in a case that at least the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is set to true, step 41 may beperformed.

In step A40, in a case that at least the serving cell in the M PDCCHmonitoring occasions 1001 associated with the HARQ-ACK code book 1000includes no monitoring occasion for the search space set configured withmonitoring of the second DCI format, step A41 may be performed.

In step A40, in a case that at least one serving cell in the M PDCCHmonitoring occasions 1001 associated with the HARQ-ACK code book 1000includes a monitoring occasion for the search space set configured withmonitoring of the second DCI format and/or 3) the higher layer parameterNumber-MCS-HARQ-DL-DCI is not set to indicate that one PDSCH in the atleast one serving cell includes two transport blocks, then step A42 maybe performed.

In step A41, O_(ACK) may be set to 4j+V_(temp2).

The length O_(ACK) of the sequence of the HARQ-ACK code book 1000 may begiven at least based on some or all of 1) whether the higher layerparameter HARQ-ACK-spatial-bundling-PUCCH is set to true or not 2) atleast one serving cell in the M PDCCH monitoring occasions 1001associated with the HARQ-ACK code book 1000 includes at least onemonitoring occasion for the search space set configured with monitoringof the second DCI format or not, and/or 3) the higher layer parameterNumber-MCS-HARQ-DL-DCI is not set to indicate that one PDSCH in the atleast one serving cell receives two transport blocks or not.

The higher layer parameter Number-MCS-HARQ-DL-DCI being set to indicatethat one PDSCH in the at least one serving cell receives two transportblocks may mean that the second DCI format includes an MCS field for thesecond transport block. The higher layer parameterNumber-MCS-HARQ-DL-DCI being set to indicate that one PDSCH in the atleast one serving cell receives two transport blocks may mean that thePUCCH generates a first HARQ-ACK corresponding to the first transportblock and a second HARQ-ACK corresponding to the second transport block.The higher layer parameter Number-MCS-HARQ-DL-DCI indicates whether thesecond DCI format includes the MCS field for the second transport block.In a case that the higher layer parameter Number-MCS-HARQ-DL-DCI is setto a third prescribed value, the second DCI format includes the MCSfield for the second transport block. In a case that the higher layerparameter Number-MCS-HARQ-DL-DCI is not set to the third prescribedvalue, the second DCI format does not include the MCS field for thesecond transport block.

In step A42, for i_(N) satisfying i_(N) ∈{0,1, . . . , O^(ACK)−1}¥V_(s),o^(ACK) _(a)(i_(N)) may be set to the value of NACK. V¥W may indicate aset of elements obtained by subtracting elements included in a set Wfrom a set V. V¥W may be a set difference of V for W.

In step A43, in a case that the PDSCH (SPS PDSCH) is configured to bereceived, the PDSCH being scheduled by a configured grant in one ormultiple slots in the M PDCCH monitoring occasions 1001 associated withthe HARQ-ACK code book 1000, and that transmission of the SPS PDSCH isactivated, then step A44 may be performed.

In step A44, O^(ACK) may be set to O^(ACK)+1. In step A44, O^(ACK) maybe set to O^(ACK)+N_(SPS). The N_(SPS) may be the number of SPS PDSCHsconfigured to be received in the M PDCCH monitoring occasions 1001associated with the HARQ-ACK code book 1000.

In step A45, o^(ACK) _(a) (o^(ACK) _(a)−1) may be set to the value ofthe HARQ-ACK bit corresponding to the transport block included in theSPS PDSCH. In step A45, o^(ACK) _(a)(O^(ACK) _(a)−i_(SPS)) may be set tothe value of the HARQ-ACK bit corresponding to the transport blockincluded in the SPS PDSCH. i_(SPS) may satisfy the condition i_(SPS)∈{0, 1, . . . , N_(SPS)−1}. In step A45, o^(ACK) _(a) (O^(ACK) _(a)−1)may be set to a value given by the binary AND operation of the HARQ-ACKbit corresponding to the transport block included in each of one ormultiple SPS PDSCHs configured to be received in the M PDCCH monitoringoccasions 1001 associated with the HARQ-ACK code book 1000.

Step A46 may be a step indicating completion of the operation of stepA43.

The first to fifth evaluation formulae are also referred to asevaluation formulae. The evaluation formula being true may indicate thatthe evaluation formula being satisfied. The evaluation formula beingfalse may indicate that the evaluation formula is not true. Theevaluation formula being false may indicate that the evaluation formulais not satisfied.

Various aspects of apparatuses according to one aspect of the presentembodiment will be described below.

(1) To accomplish the object described above, aspects of the presentinvention are contrived to provide the following measures. In otherwords, a first aspect of the present invention is a terminal apparatusincluding a receiver configured to monitor a PDCCH including a DCIformat, and a transmitter configured to transmit an HARQ-ACK on a PUCCH,wherein a size O^(ACK) of an HARQ-ACK code book of the HARQ-ACK is givenat least based on some or all of 1) whether at least one serving cell inM PDCCH monitoring occasions associated with the HARQ-ACK code bookincludes at least one monitoring occasion for a search space setconfigured with monitoring of the DCI format or not, and/or 2) whether ahigher layer parameter Number-MCS-HARQ-DL-DCI is set to a prescribedvalue for the at least one serving cell or not.

The prescribed value may be set to indicate that two transport blocksare included in one PDSCH in the at least one serving cell. The onePDSCH may be scheduled in accordance with the DCI format.

(2) In the first aspect of the present invention, the size O^(ACK) isgiven at least based on whether a higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is set to true or not, the receiverreceives a first transport block and a second transport block includedin a PDSCH scheduled by the PDCCH; and in a case that the higher layerparameter HARQ-ACK-spatial-bundling-PUCCH is not set to true, theHARQ-ACK code book includes a first HARQ-ACK bit corresponding to thefirst transport block and a second HARQ-ACK bit corresponding to thesecond transport block, and in a case that the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is set to true, the HARQ-ACK code bookincludes bits provided by a binary AND operation of the first HARQ-ACKbit corresponding to the first transport block and the second HARQ-ACKbit corresponding to the second transport block.

(3) A second aspect of the present invention is a base station apparatusincluding a transmitter configured to transmit a PDCCH including a DCIformat, and a receiver configured to receive an HARQ-ACK on a PUCCH,wherein a size O^(ACK) of an HARQ-ACK code book of the HARQ-ACK is givenat least based on some or all of 1) whether at least one serving cell inM PDCCH monitoring occasions associated with the HARQ-ACK code bookincludes at least one monitoring occasion for a search space setconfigured with monitoring of the DCI format or not, and/or 2) whether ahigher layer parameter Number-MCS-HARQ-DL-DCI is set to a prescribedvalue for the at least one serving cell or not.

The prescribed value may be set to indicate that two transport blocksare included in one PDSCH in the at least one serving cell. The onePDSCH may be scheduled in accordance with the DCI format.

(4) In the second aspect of the present invention, the size OACK isgiven at least based on whether a higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is set to true or not, the transmittertransmits a first transport block and a second transport block includedin a PDSCH scheduled by the PDCCH; and in a case that the higher layerparameter HARQ-ACK-spatial-bundling-PUCCH is not set to true, theHARQ-ACK code book includes a first HARQ-ACK bit corresponding to thefirst transport block and a second HARQ-ACK bit corresponding to thesecond transport block, and in a case that the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is set to true, the HARQ-ACK code bookincludes bits provided by a binary AND operation of the first HARQ-ACKbit corresponding to the first transport block and the second HARQ-ACKbit corresponding to the second transport block.

(5) A third aspect of the present invention is a terminal apparatusincluding a receiver configured to monitor a PDCCH including a DCIformat, and a transmitter configured to transmit an HARQ-ACK on a PUCCH,wherein the terminal apparatus receives a first transport block includedin a PDSCH scheduled by the PDCCH, the HARQ-ACK is given at least basedon a first HARQ-ACK bit corresponding to the first transport block and asecond HARQ-ACK bit corresponding to a second transport block, thetransmitter generates the second HARQ-ACK bit at least based on some orall of 1) whether at least one serving cell in M PDCCH monitoringoccasions includes at least one monitoring occasion for a search spaceset configured with monitoring of the DCI format or not, 2) a higherlayer parameter Number-MCS-HARQ-DL-DCI is set to a prescribed value forthe at least one serving cell or not, and/or 3) values of a higher layerparameter HARQ-ACK-spatial-bundling-PUCCH.

(6) In the third aspect of the present invention, in a case that 1) atleast one serving cell in the M PDCCH monitoring occasions includes atleast one monitoring occasion for a search space set configured withmonitoring of a DCI format, and 2) the higher layer parameterNumber-MCS-HARQ-DL-DCI is set to the prescribed value for the at leastone serving cell, and 3) the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is set to a second prescribed value, thetransmitter generates an ACK as the second HARQ-ACK bit.

(7) A fourth aspect of the present invention is a base station apparatusincluding a transmitter configured to transmit a PDCCH including a DCIformat, and a receiver configured to receive an HARQ-ACK on a PUCCH,wherein the terminal apparatus transmits a first transport blockincluded in a PDSCH scheduled by the PDCCH, the HARQ-ACK is given atleast based on a first HARQ-ACK bit corresponding to the first transportblock and a second HARQ-ACK bit corresponding to a second transportblock, the receiver receives the HARQ-ACK at least based on some or allof 1) whether at least one serving cell in M PDCCH monitoring occasionsincludes at least one monitoring occasion for a search space setconfigured with monitoring of the DCI format or not, 2) a higher layerparameter Number-MCS-HARQ-DL-DCI is set to a prescribed value for the atleast one serving cell or not, and/or 3) values of a higher layerparameter HARQ-ACK-spatial-bundling-PUCCH.

(8) In the fourth aspect of the present invention, in a case that 1) theat least one serving cell in the M PDCCH monitoring occasions includesat least one monitoring occasion for a search space set configured withmonitoring of a DCI format, and 2) the higher layer parameterNumber-MCS-HARQ-DL-DCI is set to the prescribed value for the at leastone serving cell, and 3) the higher layer parameterHARQ-ACK-spatial-bundling-PUCCH is set to a second prescribed value, thereceiver receives the HARQ-ACK based on an ACK being generated as thesecond HARQ-ACK bit.

(9) A fifth aspect of the present invention is a terminal apparatusincluding a receiver configured to receive a PDCCH including a DCIformat, and a transmitter configured to transmit a PUCCH, wherein, in acase that the DCI format schedules a PDSCH and that a last OFDM symbolof the PDSCH is mapped in a first slot, the PUCCH is transmitted in asecond slot, and a first offset from the first slot to the second slotis given at least based on a PDSCH-to-HARQ-timing-indicator included inthe DCI format, and in a case that the DCI format indicates an SPSrelease and that a last OFDM symbol of the PDCCH is mapped to a thirdslot, the PUCCH is transmitted in a fourth slot, and a second offsetfrom the third slot to the fourth slot is given at least based on thePDSCH-to-HARQ-timing-indicator.

(10) A sixth aspect of the present invention is a base station apparatusincluding: a transmitter configured to transmit a PDCCH including a DCIformat; and a receiver configured to receive a PUCCH, wherein in a casethat the DCI format schedules a PDSCH and that a last OFDM symbol of thePDSCH is mapped in a first slot, the PUCCH is transmitted in a secondslot, and a first offset from the first slot to the second slot is givenat least based on a PDSCH-to-HARQ-timing-indicator included in the DCIformat, and in a case that the DCI format indicates an SPS release andthat a last OFDM symbol of the PDCCH is mapped to a third slot, thePUCCH is transmitted in a fourth slot, and a second offset from thethird slot to the fourth slot is given at least based on thePDSCH-to-HARQ-timing-indicator.

(11) A seventh aspect of the present invention is a communication methodused for a terminal apparatus, the communication method including thesteps of: receiving a PDCCH including a DCI format; and transmitting aPUCCH, wherein in a case that the DCI format schedules a PDSCH and thata last OFDM symbol of the PDSCH is mapped in a first slot, the PUCCH istransmitted in a second slot, and a first offset from the first slot tothe second slot is given at least based on aPDSCH-to-HARQ-timing-indicator included in the DCI format, and in a casethat the DCI format indicates an SPS release and that a last OFDM symbolof the PDCCH is mapped to a third slot, the PUCCH is transmitted in afourth slot, and a second offset from the third slot to the fourth slotis given at least based on the PDSCH-to-HARQ-timing-indicator.

(12) An eighth aspect of the present invention is a communication methodused for a base station apparatus, the communication method includingthe steps of: transmitting a PDCCH including a DCI format; and receivinga PUCCH, wherein in a case that the DCI format schedules a PDSCH andthat a last OFDM symbol of the PDSCH is mapped in a first slot, thePUCCH is transmitted in a second slot, and a first offset from the firstslot to the second slot is given at least based on aPDSCH-to-HARQ-timing-indicator included in the DCI format, and in a casethat the DCI format indicates an SPS release and that a last OFDM symbolof the PDCCH is mapped to a third slot, the PUCCH is transmitted in afourth slot, and a second offset from the third slot to the fourth slotis given at least based on the PDSCH-to-HARQ-timing-indicator.

Each of a program running on a base station apparatus 3 and a terminalapparatus 1 according to the present invention may be a program thatcontrols a Central Processing Unit (CPU) and the like, such that theprogram causes a computer to operate in such a manner as to realize thefunctions of the above-described embodiment according to the presentinvention. The information handled in these devices is temporarilystored in a Random Access Memory (RAM) while being processed.Thereafter, the information is stored in various types of Read OnlyMemory (ROM) such as a Flash ROM and a Hard Disk Drive (HDD), and whennecessary, is read by the CPU to be modified or rewritten.

Note that the terminal apparatus 1 and the base station apparatus 3according to the above-described embodiment may be partially achieved bya computer. In that case, this configuration may be realized byrecording a program for realizing such control functions on acomputer-readable recording medium and causing a computer system to readthe program recorded on the recording medium for execution.

Note that it is assumed that the “computer system” mentioned here refersto a computer system built into the terminal apparatus 1 or the basestation apparatus 3, and the computer system includes an OS and hardwarecomponents such as a peripheral apparatus. Furthermore, a“computer-readable recording medium” refers to a portable medium such asa flexible disk, a magneto-optical disk, a ROM, a CD-ROM, and the like,and a storage device such as a hard disk built into the computer system.

Moreover, the “computer-readable recording medium” may include a mediumthat dynamically retains a program for a short period of time, such as acommunication line in a case that the program is transmitted over anetwork such as the Internet or over a communication line such as atelephone line, and may also include a medium that retains the programfor a fixed period of time, such as a volatile memory included in thecomputer system functioning as a server or a client in such a case.Furthermore, the above-described program may be one for realizing someof the above-described functions, and also may be one capable ofrealizing the above-described functions in combination with a programalready recorded in a computer system.

Furthermore, the base station apparatus 3 according to theabove-described embodiment may be achieved as an aggregation (apparatusgroup) including multiple apparatuses. Each of the apparatusesconstituting such an apparatus group may include some or all portions ofeach function or each functional block of the base station apparatus 3according to the above-described embodiment. The apparatus group needsto have a complete set of functions or functional blocks of the basestation apparatus 3. Furthermore, the terminal apparatus 1 according tothe above-described embodiment can also communicate with the basestation apparatus as the aggregation.

Moreover, the base station apparatus 3 according to the above-describedembodiment may be an Evolved Universal Terrestrial Radio Access Network(EUTRAN) and/or a NextGen RAN (NG-RAN) or NR RAN. Moreover, the basestation apparatus 3 according to the above-described embodiment may havesome or all of the functions of a higher node for an eNodeB and/or agNB.

Furthermore, some or all portions of each of the terminal apparatus 1and the base station apparatus 3 according to the above-describedembodiment may be typically achieved as an LSI which is an integratedcircuit or may be achieved as a chip set. The functional blocks of eachof the terminal apparatus 1 and the base station apparatus 3 may beindividually achieved as a chip, or some or all of the functional blocksmay be integrated into a chip. Furthermore, a circuit integrationtechnique is not limited to the LSI, and may be realized with adedicated circuit or a general-purpose processor. Furthermore, in a casewhere with advances in semiconductor technology, a circuit integrationtechnology with which an LSI is replaced appears, it is also possible touse an integrated circuit based on the technology.

Furthermore, according to the above-described embodiment, the terminalapparatus has been described as an example of a communication apparatus,but the present invention is not limited to such a terminal apparatus,and is applicable to a terminal apparatus or a communication apparatusof a fixed-type or a stationary-type electronic apparatus installedindoors or outdoors, for example, such as an Audio-Video (AV) apparatus,a kitchen apparatus, a cleaning or washing machine, an air-conditioningapparatus, office equipment, a vending machine, and other householdapparatuses.

The embodiments of the present invention have been described in detailabove referring to the drawings, but the specific configuration is notlimited to the embodiments and includes, for example, an amendment to adesign that falls within the scope that does not depart from the gist ofthe present invention. Various modifications are possible within thescope of the present invention defined by claims, and embodiments thatare made by suitably combining technical means disclosed according tothe different embodiments are also included in the technical scope ofthe present invention. Furthermore, a configuration in which constituentelements, described in the respective embodiments and having mutuallythe same effects, are substituted for one another is also included inthe technical scope of the present invention.

1. A terminal apparatus comprising: a receiver configured to receive aPDCCH including a DCI format; and a transmitter configured to transmit aPUCCH, wherein in a case that the DCI format schedules a PDSCH and thata last OFDM symbol of the PDSCH is mapped in a first slot, the PUCCH istransmitted in a second slot, and a first offset from the first slot tothe second slot is given at least based on aPDSCH-to-HARQ-timing-indicator included in the DCI format, and in a casethat the DCI format indicates an SPS release and that a last OFDM symbolof the PDCCH is mapped to a third slot, the PUCCH is transmitted in afourth slot, and a second offset from the third slot to the fourth slotis given at least based on the PDSCH-to-HARQ-timing-indicator.
 2. Theterminal apparatus according to claim 1, wherein in a case that the DCIformat schedules the PDSCH and that the last OFDM symbol of the PDSCH ismapped to the first slot, the PDCCH is transmitted in a fifth slot, anda third offset from the fifth slot to the first slot is given at leastbased on a time domain resource allocation field included in the DCIformat.
 3. A base station apparatus comprising: a transmitter configuredto transmit a PDCCH including a DCI format; and a receiver configured toreceive a PUCCH, wherein in a case that the DCI format schedules a PDSCHand that a last OFDM symbol of the PDSCH is mapped in a first slot, thePUCCH is transmitted in a second slot, and a first offset from the firstslot to the second slot is given at least based on aPDSCH-to-HARQ-timing-indicator included in the DCI format, and in a casethat the DCI format indicates an SPS release and that a last OFDM symbolof the PDCCH is mapped to a third slot, the PUCCH is transmitted in afourth slot, and a second offset from the third slot to the fourth slotis given at least based on the PDSCH-to-HARQ-timing-indicator.
 4. Thebase station apparatus according to claim 3, wherein in a case that theDCI format schedules the PDSCH and that the last OFDM symbol of thePDSCH is mapped to the first slot, the PDCCH is transmitted in a fifthslot, and a third offset from the fifth slot to the first slot is givenat least based on a time domain resource allocation field included inthe DCI format.
 5. A communication method used for a terminal apparatus,the communication method comprising the steps of: receiving a PDCCHincluding a DCI format; and transmitting a PUCCH, wherein in a case thatthe DCI format schedules a PDSCH and that a last OFDM symbol of thePDSCH is mapped in a first slot, the PUCCH is transmitted in a secondslot, and a first offset from the first slot to the second slot is givenat least based on a PDSCH-to-HARQ-timing-indicator included in the DCIformat, and in a case that the DCI format indicates an SPS release andthat a last OFDM symbol of the PDCCH is mapped to a third slot, thePUCCH is transmitted in a fourth slot, and a second offset from thethird slot to the fourth slot is given at least based on thePDSCH-to-HARQ-timing-indicator.
 6. A communication method used for abase station apparatus, the communication method comprising the stepsof: transmitting a PDCCH including a DCI format; and receiving a PUCCH,wherein in a case that the DCI format schedules a PDSCH and that a lastOFDM symbol of the PDSCH is mapped in a first slot, the PUCCH istransmitted in a second slot, and a first offset from the first slot tothe second slot is given at least based on aPDSCH-to-HARQ-timing-indicator included in the DCI format, and in a casethat the DCI format indicates an SPS release and that a last OFDM symbolof the PDCCH is mapped to a third slot, the PUCCH is transmitted in afourth slot, and a second offset from the third slot to the fourth slotis given at least based on the PDSCH-to-HARQ-timing-indicator.